# La–Ni phases

> La–Ni system: 17 phases (tier A 8, tier C 3, liquid 1, needs_review 5); 16 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/LA-NI.html · Markdown: https://data.orchid-project.org/phases/pages/LA-NI.md

17 phases (tier A 8, tier C 3, liquid 1, needs_review 5); 16 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: [interactive registry](https://orchid-project.org/phases/?q=LA-NI) · [full JSON](https://data.orchid-project.org/phases/systems/LA-NI.json) · [La–Ni system page](https://data.orchid-project.org/systems/LA-NI.html) · [Markdown](https://data.orchid-project.org/phases/pages/LA-NI.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the La–Ni system (17)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-la-ni-bcc-a2); _phase:la-ni:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 1134–1204 K, x(Ni) 0–1e-05 | 0 | 5 |
| [DHCP](#phase-la-ni-dhcp-a3); _phase:la-ni:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–873.75 K, x(Ni) 0–0 | 0 | 5 |
| [FCC_A1](#phase-la-ni-fcc-a1); _phase:la-ni:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–2499.69 K, x(Ni) 0–1 | 24 | 5 |
| [HCP_A3](#phase-la-ni-hcp-a3); _phase:la-ni:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 5 calculated diagram(s) | 0 | 5 |
| [LA2NI3](#phase-la-ni-la2ni3); _phase:la-ni:la2ni3_ | La2Ni3 · oC20 · Cmce (64) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 300–974.13 K, x(Ni) 0.6–0.6 | 29 | 5 |
| [LA2NI7](#phase-la-ni-la2ni7); _phase:la-ni:la2ni7_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1247.25 K, x(Ni) 0.77778–0.77778 | 22 | 2 |
| [LA2NI7_A](#phase-la-ni-la2ni7-a); _phase:la-ni:la2ni7-a_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 300–1249.4 K, x(Ni) 0.77778–0.77778 | 10 | 3 |
| [LA2NI7_B](#phase-la-ni-la2ni7-b); _phase:la-ni:la2ni7-b_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 1210.49–1471.08 K, x(Ni) 0.77778–0.77778 | 10 | 3 |
| [LA3NI_D011](#phase-la-ni-la3ni-d011); _phase:la-ni:la3ni-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–846.14 K, x(Ni) 0.25–0.25 | 19 | 5 |
| [LA4NI17](#phase-la-ni-la4ni17); _phase:la-ni:la4ni17_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1535.36 K, x(Ni) 0.80952–0.80952 | 5 | 1 |
| [LA5NI19](#phase-la-ni-la5ni19); _phase:la-ni:la5ni19_ | Co19Sm5 · hP48 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1276.89 K, x(Ni) 0.79167–0.79167 | 15 | 2 |
| [LA7NI16](#phase-la-ni-la7ni16); _phase:la-ni:la7ni16_ |  | needs_review | stable in 5 of 5 calculated diagram(s): 300–1008.69 K, x(Ni) 0.69565–0.6957 | 38 | 5 |
| [LA7NI3_D102](#phase-la-ni-la7ni3-d102); _phase:la-ni:la7ni3-d102_ | Fe3Th7 · D10_2 · hP20 · P6_3mc (186) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–836.4 K, x(Ni) 0.3–0.3 | 18 | 5 |
| [LANI_B33](#phase-la-ni-lani-b33); _phase:la-ni:lani-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–987.97 K, x(Ni) 0.5–0.5 | 21 | 5 |
| [LANI3](#phase-la-ni-lani3); _phase:la-ni:lani3_ | Ni3Pu · hR12 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 300–1084.51 K, x(Ni) 0.75–0.75 | 38 | 5 |
| [LANI5_D2D](#phase-la-ni-lani5-d2d); _phase:la-ni:lani5-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–1656.89 K, x(Ni) 0.83042–0.85306 | 40 | 5 |
| [LIQUID](#phase-la-ni-liquid); _phase:la-ni:liquid_ | liquid | liquid | stable in 5 of 5 calculated diagram(s): 784.25–2500 K, x(Ni) 0–1 | 142 | 5 |

## BCC_A2 (La–Ni)

- Id: `phase:la-ni:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: stable in 5 of 5 calculated diagram(s): 1134–1204 K, x(Ni) 0–1e-05
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:bcc-a2)

Names (6): _corpus: _corpus:phase:la-ni:bcc-a2  
_tdb: _tdb:LaNi-00Dis.tdb:BCC_A2, tdb:LaNi-00Liu-LB.tdb:BCC_A2, tdb:LaNi-13An.tdb:BCC_A2, tdb:LaNi-23Ye.tdb:BCC_A2, tdb:LaNi-98Du.tdb:BCC_A2  


### TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): BCC_A2, type code %B, sha256 `4623d8f930a40e64…`

~~~~text
40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : LA% NI : VA : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): BCC_A2, type code %B, sha256 `d1800ee5af113676…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : LA% NI : VA : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): BCC_A2, type code %B, sha256 `b745601a215ef14a…`

~~~~text
42: PHASE BCC_A2 %B 2 1 3 !
43: CONST BCC_A2 : LA% NI : VA : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): BCC_A2, type code %B, sha256 `47b0d312ecfc4ba3…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : LA% NI : VA : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): BCC_A2, type code %B, sha256 `ef5d2fcabc9ab23f…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : LA% NI : VA : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_

## DHCP (La–Ni)

- Id: `phase:la-ni:dhcp-a3`; status `assigned`
- Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high
- Stability: stable in 5 of 5 calculated diagram(s): 300–873.75 K, x(Ni) 0–0
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:dhcp-a3)

Names (6): _corpus: _corpus:phase:la-ni:dhcp-a3  
_tdb: _tdb:LaNi-00Dis.tdb:DHCP, tdb:LaNi-00Liu-LB.tdb:DHCP, tdb:LaNi-13An.tdb:DHCP, tdb:LaNi-23Ye.tdb:DHCP, tdb:LaNi-98Du.tdb:DHCP  


### TDB models of DHCP (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): DHCP, type code %, sha256 `4623d8f930a40e64…`

~~~~text
50: PHASE DHCP % 1 1 !
51: CONST DHCP : LA : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): DHCP, type code %, sha256 `d1800ee5af113676…`

~~~~text
44: PHASE DHCP % 1 1 !
45: CONST DHCP : LA% : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): DHCP, type code %, sha256 `b745601a215ef14a…`

~~~~text
52: PHASE DHCP % 1 1 !
53: CONST DHCP : LA% NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): DHCP, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
44: PHASE DHCP % 1 1 !
45: CONST DHCP : LA% NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): DHCP, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
44: PHASE DHCP % 1 1 !
45: CONST DHCP : LA% NI : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_

## FCC_A1 (La–Ni)

- Id: `phase:la-ni:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: stable in 5 of 5 calculated diagram(s): 300–2499.69 K, x(Ni) 0–1
- Literature: 24 values (24 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:fcc-a1)

Names (13): _corpus: _corpus:phase:la-ni:fcc-a1  
_paper: _paper:10.1007/s10853-022-08039-1:fcc(Ni), paper:10.1016/j.calphad.2012.12.002:Fcc(La), paper:10.1016/j.calphad.2012.12.002:Fcc(Ni), paper:10.1016/s0925-8388(00)01151-8:(Ni), paper:10.1016/s0925-8388(00)01151-8:β-La, paper:10.1016/s0925-8388(97)00269-7:f.c.c.(La), paper:10.1016/s0925-8388(97)00269-7:f.c.c.(Ni)  
_tdb: _tdb:LaNi-00Dis.tdb:FCC_A1, tdb:LaNi-00Liu-LB.tdb:FCC_A1, tdb:LaNi-13An.tdb:FCC_A1, tdb:LaNi-23Ye.tdb:FCC_A1, tdb:LaNi-98Du.tdb:FCC_A1  


### TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): FCC_A1, type code %A, sha256 `4623d8f930a40e64…`

~~~~text
35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : LA% NI% : VA : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): FCC_A1, type code %A, sha256 `d1800ee5af113676…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : LA% NI% : VA : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): FCC_A1, type code %A, sha256 `b745601a215ef14a…`

~~~~text
37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : LA% NI% : VA : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): FCC_A1, type code %A, sha256 `47b0d312ecfc4ba3…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : LA% NI% : VA : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): FCC_A1, type code %A, sha256 `ef5d2fcabc9ab23f…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : LA% NI% : VA : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## HCP_A3 (La–Ni)

- Id: `phase:la-ni:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stoichiometry: Ni 1.0000
- Stability: not stable in 5 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:hcp-a3)

Names (6): _corpus: _corpus:phase:la-ni:hcp-a3  
_tdb: _tdb:LaNi-00Dis.tdb:HCP_A3, tdb:LaNi-00Liu-LB.tdb:HCP_A3, tdb:LaNi-13An.tdb:HCP_A3, tdb:LaNi-23Ye.tdb:HCP_A3, tdb:LaNi-98Du.tdb:HCP_A3  


### TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): HCP_A3, type code %A, sha256 `4623d8f930a40e64…`

~~~~text
45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : NI : VA : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): HCP_A3, type code %A, sha256 `d1800ee5af113676…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : NI : VA : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): HCP_A3, type code %A, sha256 `b745601a215ef14a…`

~~~~text
47: PHASE HCP_A3 %A 2 1 0.5 !
48: CONST HCP_A3 : NI : VA : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): HCP_A3, type code %A, sha256 `47b0d312ecfc4ba3…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : NI : VA : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): HCP_A3, type code %A, sha256 `ef5d2fcabc9ab23f…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : NI : VA : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_

## LA2NI3 (La–Ni)

- Id: `phase:la-ni:la2ni3`; status `assigned`
- Structure: La2Ni3 · oC20 · Cmce (64); type `st:la2ni3-oc20`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
- Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: La 0.4000, Ni 0.6000
- Stability: stable in 5 of 5 calculated diagram(s): 300–974.13 K, x(Ni) 0.6–0.6
- Literature: 29 values (29 accepted) from 5 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la2ni3)

Names (11): _corpus: _corpus:phase:la-ni:la2ni3  
_paper: _paper:10.1007/s10853-022-08039-1:La2Ni3, paper:10.1016/j.calphad.2011.10.004:La2Ni3, paper:10.1016/j.calphad.2012.12.002:La2Ni3, paper:10.1016/s0925-8388(00)01151-8:Ni3La2, paper:10.1016/s0925-8388(97)00269-7:La2Ni3  
_tdb: _tdb:LaNi-00Dis.tdb:LA2NI3, tdb:LaNi-00Liu-LB.tdb:LA2NI3, tdb:LaNi-13An.tdb:LA2NI3, tdb:LaNi-23Ye.tdb:LA2NI3, tdb:LaNi-98Du.tdb:LA2NI3  


### TDB models of LA2NI3 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA2NI3, type code %, sha256 `4623d8f930a40e64…`

~~~~text
70: PHASE LA2NI3 % 2 2 3 !
71: CONST LA2NI3 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA2NI3, type code %, sha256 `d1800ee5af113676…`

~~~~text
64: PHASE LA2NI3 % 2 0.4 0.6 !
65: CONST LA2NI3 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA2NI3, type code %, sha256 `b745601a215ef14a…`

~~~~text
72: PHASE LA2NI3 % 2 2 3 !
73: CONST LA2NI3 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA2NI3, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
64: PHASE LA2NI3 % 2 2 3 !
65: CONST LA2NI3 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA2NI3, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
64: PHASE LA2NI3 % 2 2 3 !
65: CONST LA2NI3 : LA : NI : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).  
_reports values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LA2NI7 (La–Ni)

- Id: `phase:la-ni:la2ni7`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
- Candidate (dft_mp): R-3m (166) — on-hull MP La2Ni7 at x(NI)=0.7778
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — LaNi-13An.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc), low T'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m — LaNi-13An.tdb: 'Prototype Co7Gd2 (hR18, R-3m), high T'
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — LaNi-23Ye.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc), low T'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m — LaNi-23Ye.tdb: 'Prototype Co7Gd2 (hR18, R-3m), high T'
- Stoichiometry: La 0.2222, Ni 0.7778
- Stability: stable in 2 of 2 calculated diagram(s): 300–1247.25 K, x(Ni) 0.77778–0.77778
- Literature: 22 values (22 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la2ni7)

Names (6): _corpus: _corpus:phase:la-ni:la2ni7  
_paper: _paper:10.1007/s10853-022-08039-1:La2Ni7, paper:10.1016/j.calphad.2012.12.002:La2Ni7, paper:10.1016/j.calphad.2012.12.002:αLa2Ni7  
_tdb: _tdb:LaNi-13An.tdb:LA2NI7, tdb:LaNi-23Ye.tdb:LA2NI7  


### TDB models of LA2NI7 (2): PHASE and CONSTITUENT statements as written

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA2NI7, type code %, sha256 `b745601a215ef14a…`

~~~~text
88: PHASE LA2NI7 % 2 2 7 !
89: CONST LA2NI7 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA2NI7, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
80: PHASE LA2NI7 % 2 2 7 !
81: CONST LA2NI7 : LA : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LA2NI7_A (La–Ni)

- Id: `phase:la-ni:la2ni7-a`; status `needs_review`
- No structure assigned. Why: name_has_descriptive_tokens:A; no_structure_token
- Candidate (dft_mp): R-3m (166) — on-hull MP La2Ni7 at x(NI)=0.7778
- Candidate (sgte_mmc2): Ce2Ni7 · hP36 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for LA2NI7_A: La2Ni7-alpha
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — LaNi-00Dis.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc)'
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — LaNi-00Liu-LB.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc)'
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — LaNi-98Du.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc)'
- Stoichiometry: La 0.2222, Ni 0.7778
- Stability: stable in 3 of 3 calculated diagram(s): 300–1249.4 K, x(Ni) 0.77778–0.77778
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la2ni7-a)

Names (6): _corpus: _corpus:phase:la-ni:la2ni7-a  
_paper: _paper:10.1016/s0925-8388(00)01151-8:α-Ni7La2, paper:10.1016/s0925-8388(97)00269-7:αLa2Ni7  
_tdb: _tdb:LaNi-00Dis.tdb:LA2NI7_A, tdb:LaNi-00Liu-LB.tdb:LA2NI7_A, tdb:LaNi-98Du.tdb:LA2NI7_A  


### TDB models of LA2NI7_A (3): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA2NI7_A, type code %, sha256 `4623d8f930a40e64…`

~~~~text
85: PHASE LA2NI7_A % 2 2 7 !
86: CONST LA2NI7_A : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA2NI7_A, type code %, sha256 `d1800ee5af113676…`

~~~~text
79: PHASE LA2NI7_A % 2 0.22222 0.77778 !
80: CONST LA2NI7_A : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA2NI7_A, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
79: PHASE LA2NI7_A % 2 2 7 !
80: CONST LA2NI7_A : LA : NI : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_

## LA2NI7_B (La–Ni)

- Id: `phase:la-ni:la2ni7-b`; status `needs_review`
- No structure assigned. Why: name_has_descriptive_tokens:B; no_structure_token
- Candidate (dft_mp): R-3m (166) — on-hull MP La2Ni7 at x(NI)=0.7778
- Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for LA2NI7_B: La2Ni7-beta
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m — LaNi-00Dis.tdb: 'Prototype Co7Gd2 (hR18, R-3m)'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m — LaNi-00Liu-LB.tdb: 'Prototype Co7Gd2 (hR18, R-3m)'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m — LaNi-98Du.tdb: 'Prototype Co7Gd2 (hR18, R-3m)'
- Stoichiometry: La 0.2222, Ni 0.7778
- Stability: stable in 3 of 3 calculated diagram(s): 1210.49–1471.08 K, x(Ni) 0.77778–0.77778
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la2ni7-b)

Names (6): _corpus: _corpus:phase:la-ni:la2ni7-b  
_paper: _paper:10.1016/s0925-8388(00)01151-8:β-Ni7La2, paper:10.1016/s0925-8388(97)00269-7:βLa2Ni7  
_tdb: _tdb:LaNi-00Dis.tdb:LA2NI7_B, tdb:LaNi-00Liu-LB.tdb:LA2NI7_B, tdb:LaNi-98Du.tdb:LA2NI7_B  


### TDB models of LA2NI7_B (3): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA2NI7_B, type code %, sha256 `4623d8f930a40e64…`

~~~~text
90: PHASE LA2NI7_B % 2 2 7 !
91: CONST LA2NI7_B : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA2NI7_B, type code %, sha256 `d1800ee5af113676…`

~~~~text
84: PHASE LA2NI7_B % 2 0.22222 0.77778 !
85: CONST LA2NI7_B : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA2NI7_B, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
84: PHASE LA2NI7_B % 2 2 7 !
85: CONST LA2NI7_B : LA : NI : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_

## LA3NI_D011 (La–Ni)

- Id: `phase:la-ni:la3ni-d011`; status `assigned`
- Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high
- Stoichiometry: La 0.7500, Ni 0.2500
- Stability: stable in 5 of 5 calculated diagram(s): 300–846.14 K, x(Ni) 0.25–0.25
- Literature: 19 values (19 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la3ni-d011)

Names (9): _corpus: _corpus:phase:la-ni:la3ni-d011  
_paper: _paper:10.1016/j.calphad.2012.12.002:La3Ni, paper:10.1016/s0925-8388(00)01151-8:NiLa3, paper:10.1016/s0925-8388(97)00269-7:La3Ni  
_tdb: _tdb:LaNi-00Dis.tdb:LA3NI_D011, tdb:LaNi-00Liu-LB.tdb:LA3NI_D011, tdb:LaNi-13An.tdb:LA3NI_D011, tdb:LaNi-23Ye.tdb:LA3NI_D011, tdb:LaNi-98Du.tdb:LA3NI_D011  


### TDB models of LA3NI_D011 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA3NI_D011, type code %, sha256 `4623d8f930a40e64…`

~~~~text
55: PHASE LA3NI_D011 % 2 3 1 !
56: CONST LA3NI_D011 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA3NI_D011, type code %, sha256 `d1800ee5af113676…`

~~~~text
49: PHASE LA3NI_D011 % 2 0.75 0.25 !
50: CONST LA3NI_D011 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA3NI_D011, type code %, sha256 `b745601a215ef14a…`

~~~~text
57: PHASE LA3NI_D011 % 2 3 1 !
58: CONST LA3NI_D011 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA3NI_D011, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
49: PHASE LA3NI_D011 % 2 3 1 !
50: CONST LA3NI_D011 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA3NI_D011, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
49: PHASE LA3NI_D011 % 2 3 1 !
50: CONST LA3NI_D011 : LA : NI : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LA4NI17 (La–Ni)

- Id: `phase:la-ni:la4ni17`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (La4Ni17) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (La4Ni17) — Hallstedt 2025 mmc2 row for LA4NI17: La4Ni17
- Stoichiometry: La 0.1905, Ni 0.8095
- Stability: stable in 1 of 1 calculated diagram(s): 300–1535.36 K, x(Ni) 0.80952–0.80952
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la4ni17)

Names (3): _corpus: _corpus:phase:la-ni:la4ni17  
_paper: _paper:10.1016/s0925-8388(00)01151-8:Ni17La4  
_tdb: _tdb:LaNi-00Dis.tdb:LA4NI17  


### TDB models of LA4NI17 (1): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA4NI17, type code %, sha256 `4623d8f930a40e64…`

~~~~text
95: PHASE LA4NI17 % 2 4 17 !
96: CONST LA4NI17 : LA : NI : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_

## LA5NI19 (La–Ni)

- Id: `phase:la-ni:la5ni19`; status `assigned`
- Structure: Co19Sm5 · hP48 · P6_3/mmc (194); type `st:co19sm5-hp48`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
- Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: La 0.2083, Ni 0.7917
- Stability: stable in 2 of 2 calculated diagram(s): 300–1276.89 K, x(Ni) 0.79167–0.79167
- Literature: 15 values (15 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la5ni19)

Names (5): _corpus: _corpus:phase:la-ni:la5ni19  
_paper: _paper:10.1007/s10853-022-08039-1:La5Ni19, paper:10.1016/j.calphad.2012.12.002:La5Ni19  
_tdb: _tdb:LaNi-13An.tdb:LA5NI19, tdb:LaNi-23Ye.tdb:LA5NI19  


### TDB models of LA5NI19 (2): PHASE and CONSTITUENT statements as written

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA5NI19, type code %, sha256 `b745601a215ef14a…`

~~~~text
93: PHASE LA5NI19 % 2 5 19 !
94: CONST LA5NI19 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA5NI19, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
85: PHASE LA5NI19 % 2 5 19 !
86: CONST LA5NI19 : LA : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/s1359-6454(97)00206-1](https://doi.org/10.1016/s1359-6454%2897%2900206-1) T. Yamamoto, H. Inui, M. Yamaguchi, K. Sato, S. Fujitani, I. Yonezu et al., Microstructures and hydrogen absorption/desorption properties of La Ni alloys in the composition range of La 77.8 ∼ 83.2 at.%Ni, Acta Materialia 45, 5213-5221 (1997).  
_cited as the source of values for this phase_

## LA7NI16 (La–Ni)

- Id: `phase:la-ni:la7ni16`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; no_structure_token
- Candidate (dft_mp): I-42m (121) — on-hull MP La7Ni16 at x(NI)=0.6957
- Candidate (dft_oqmd): I-42m (121) — on-hull OQMD La7 Ni16 at x(NI)=0.6957
- Candidate (literature_printed): La7Ni16 · tI46 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): La7Ni16 · tI46 · I-42m (121) — Hallstedt 2025 mmc2 row for LA7NI16: La7Ni16
- Candidate (tdb_comment): La7Ni16 · tI46 · I-42m — LaNi-00Dis.tdb: 'Prototype La7Ni16 (tI46, I-42m)'
- Candidate (tdb_comment): La7Ni16 · tI46 · I-42m — LaNi-00Liu-LB.tdb: 'Prototype La7Ni16 (tI46, I-42m)'
- Candidate (tdb_comment): La7Ni16 · tI46 · I-42m — LaNi-13An.tdb: 'Prototype La7Ni16 (tI46, I-42m)'
- Candidate (tdb_comment): La7Ni16 · tI46 · I-42m — LaNi-23Ye.tdb: 'Prototype La7Ni16 (tI46, I-42m)'
- Stability: stable in 5 of 5 calculated diagram(s): 300–1008.69 K, x(Ni) 0.69565–0.6957
- Literature: 38 values (38 accepted) from 5 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la7ni16)

Names (11): _corpus: _corpus:phase:la-ni:la7ni16  
_paper: _paper:10.1007/s10853-022-08039-1:La7Ni16, paper:10.1016/j.calphad.2011.10.004:La7Ni16, paper:10.1016/j.calphad.2012.12.002:La7Ni16, paper:10.1016/s0925-8388(00)01151-8:Ni16La7, paper:10.1016/s0925-8388(97)00269-7:La7Ni16  
_tdb: _tdb:LaNi-00Dis.tdb:LA7NI16, tdb:LaNi-00Liu-LB.tdb:LA7NI16, tdb:LaNi-13An.tdb:LA7NI16, tdb:LaNi-23Ye.tdb:LA7NI16, tdb:LaNi-98Du.tdb:LA7NI16  


### TDB models of LA7NI16 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA7NI16, type code %, sha256 `4623d8f930a40e64…`

~~~~text
75: PHASE LA7NI16 % 2 7 16 !
76: CONST LA7NI16 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA7NI16, type code %, sha256 `d1800ee5af113676…`

~~~~text
69: PHASE LA7NI16 % 2 0.3043 0.6957 !
70: CONST LA7NI16 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA7NI16, type code %, sha256 `b745601a215ef14a…`

~~~~text
77: PHASE LA7NI16 % 2 7 16 !
78: CONST LA7NI16 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA7NI16, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
69: PHASE LA7NI16 % 2 7 16 !
70: CONST LA7NI16 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA7NI16, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
69: PHASE LA7NI16 % 2 7 16 !
70: CONST LA7NI16 : LA : NI : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).  
_reports values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LA7NI3_D102 (La–Ni)

- Id: `phase:la-ni:la7ni3-d102`; status `assigned`
- Structure: Fe3Th7 · D10_2 · hP20 · P6_3mc (186); type `st:d10-2-fe3th7-hp20`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaabgqxj and oqmd-17565, space group 186
- Stoichiometry: La 0.7000, Ni 0.3000
- Stability: stable in 5 of 5 calculated diagram(s): 300–836.4 K, x(Ni) 0.3–0.3
- Literature: 18 values (18 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:la7ni3-d102)

Names (11): _corpus: _corpus:phase:la-ni:la7ni3-d102  
_mp: _mp:mp-aaabgqxj  
_oqmd: _oqmd:oqmd-17565  
_paper: _paper:10.1016/j.calphad.2012.12.002:La7Ni3, paper:10.1016/s0925-8388(00)01151-8:Ni3La7, paper:10.1016/s0925-8388(97)00269-7:La7Ni3  
_tdb: _tdb:LaNi-00Dis.tdb:LA7NI3_D102, tdb:LaNi-00Liu-LB.tdb:LA7NI3_D102, tdb:LaNi-13An.tdb:LA7NI3_D102, tdb:LaNi-23Ye.tdb:LA7NI3_D102, tdb:LaNi-98Du.tdb:LA7NI3_D102  


### TDB models of LA7NI3_D102 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LA7NI3_D102, type code %, sha256 `4623d8f930a40e64…`

~~~~text
60: PHASE LA7NI3_D102 % 2 7 3 !
61: CONST LA7NI3_D102 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LA7NI3_D102, type code %, sha256 `d1800ee5af113676…`

~~~~text
54: PHASE LA7NI3_D102 % 2 0.7 0.3 !
55: CONST LA7NI3_D102 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LA7NI3_D102, type code %, sha256 `b745601a215ef14a…`

~~~~text
62: PHASE LA7NI3_D102 % 2 7 3 !
63: CONST LA7NI3_D102 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LA7NI3_D102, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
54: PHASE LA7NI3_D102 % 2 7 3 !
55: CONST LA7NI3_D102 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LA7NI3_D102, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
54: PHASE LA7NI3_D102 % 2 7 3 !
55: CONST LA7NI3_D102 : LA : NI : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LANI_B33 (La–Ni)

- Id: `phase:la-ni:lani-b33`; status `assigned`
- Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaacipat and oqmd-30648, space group 63
- Stoichiometry: La 0.5000, Ni 0.5000
- Stability: stable in 5 of 5 calculated diagram(s): 300–987.97 K, x(Ni) 0.5–0.5
- Literature: 21 values (21 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:lani-b33)

Names (11): _corpus: _corpus:phase:la-ni:lani-b33  
_mp: _mp:mp-aaacipat  
_oqmd: _oqmd:oqmd-30648  
_paper: _paper:10.1016/j.calphad.2012.12.002:LaNi, paper:10.1016/s0925-8388(00)01151-8:NiLa, paper:10.1016/s0925-8388(97)00269-7:LaNi  
_tdb: _tdb:LaNi-00Dis.tdb:LANI_B33, tdb:LaNi-00Liu-LB.tdb:LANI_B33, tdb:LaNi-13An.tdb:LANI_B33, tdb:LaNi-23Ye.tdb:LANI_B33, tdb:LaNi-98Du.tdb:LANI_B33  


### TDB models of LANI_B33 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LANI_B33, type code %, sha256 `4623d8f930a40e64…`

~~~~text
65: PHASE LANI_B33 % 2 1 1 !
66: CONST LANI_B33 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LANI_B33, type code %, sha256 `d1800ee5af113676…`

~~~~text
59: PHASE LANI_B33 % 2 0.5 0.5 !
60: CONST LANI_B33 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LANI_B33, type code %, sha256 `b745601a215ef14a…`

~~~~text
67: PHASE LANI_B33 % 2 1 1 !
68: CONST LANI_B33 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LANI_B33, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
59: PHASE LANI_B33 % 2 1 1 !
60: CONST LANI_B33 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LANI_B33, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
59: PHASE LANI_B33 % 2 1 1 !
60: CONST LANI_B33 : LA : NI : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LANI3 (La–Ni)

- Id: `phase:la-ni:lani3`; status `assigned`
- Structure: Ni3Pu · hR12 · R-3m (166); type `st:ni3pu-hr12`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
- Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: La 0.2500, Ni 0.7500
- Stability: stable in 5 of 5 calculated diagram(s): 300–1084.51 K, x(Ni) 0.75–0.75
- Literature: 38 values (38 accepted) from 5 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:lani3)

Names (11): _corpus: _corpus:phase:la-ni:lani3  
_paper: _paper:10.1007/s10853-022-08039-1:LaNi3, paper:10.1016/j.calphad.2011.10.004:LaNi3, paper:10.1016/j.calphad.2012.12.002:LaNi3, paper:10.1016/s0925-8388(00)01151-8:Ni3La, paper:10.1016/s0925-8388(97)00269-7:LaNi3  
_tdb: _tdb:LaNi-00Dis.tdb:LANI3, tdb:LaNi-00Liu-LB.tdb:LANI3, tdb:LaNi-13An.tdb:LANI3, tdb:LaNi-23Ye.tdb:LANI3, tdb:LaNi-98Du.tdb:LANI3  


### TDB models of LANI3 (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LANI3, type code %, sha256 `4623d8f930a40e64…`

~~~~text
80: PHASE LANI3 % 2 1 3 !
81: CONST LANI3 : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LANI3, type code %, sha256 `d1800ee5af113676…`

~~~~text
74: PHASE LANI3 % 2 0.25 0.75 !
75: CONST LANI3 : LA : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LANI3, type code %, sha256 `b745601a215ef14a…`

~~~~text
82: PHASE LANI3 % 2 1 3 !
83: CONST LANI3 : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LANI3, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
74: PHASE LANI3 % 2 1 3 !
75: CONST LANI3 : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LANI3, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
74: PHASE LANI3 % 2 1 3 !
75: CONST LANI3 : LA : NI : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).  
_reports values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LANI5_D2D (La–Ni)

- Id: `phase:la-ni:lani5-d2d`; status `assigned`
- Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type `st:d2-d-cacu5-hp6`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in LaNi-00Liu-LB.tdb also describes the disordered state
- Stability: stable in 5 of 5 calculated diagram(s): 300–1656.89 K, x(Ni) 0.83042–0.85306
- Literature: 40 values (40 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:lani5-d2d)

Names (10): _corpus: _corpus:phase:la-ni:lani5-d2d  
_paper: _paper:10.1007/s10853-022-08039-1:LaNi5, paper:10.1016/j.calphad.2012.12.002:LaNi5, paper:10.1016/s0925-8388(00)01151-8:Ni5La, paper:10.1016/s0925-8388(97)00269-7:LaNi5  
_tdb: _tdb:LaNi-00Dis.tdb:LANI5_D2D, tdb:LaNi-00Liu-LB.tdb:LANI5_D2D, tdb:LaNi-13An.tdb:LANI5_D2D, tdb:LaNi-23Ye.tdb:LANI5_D2D, tdb:LaNi-98Du.tdb:LANI5_D2D  


### TDB models of LANI5_D2D (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LANI5_D2D, type code %, sha256 `4623d8f930a40e64…`

~~~~text
100: PHASE LANI5_D2D % 2 1 5 !
101: CONST LANI5_D2D : LA : NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LANI5_D2D, type code %, sha256 `d1800ee5af113676…`

~~~~text
89: PHASE LANI5_D2D % 3 0.16667 0.33333 0.5 !
90: CONST LANI5_D2D : LA% NI : LA NI% : NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LANI5_D2D, type code %, sha256 `b745601a215ef14a…`

~~~~text
98: PHASE LANI5_D2D % 2 1 5 !
99: CONST LANI5_D2D : LA : NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LANI5_D2D, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
90: PHASE LANI5_D2D % 2 1 5 !
91: CONST LANI5_D2D : LA : NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LANI5_D2D, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
89: PHASE LANI5_D2D % 2 1 5 !
90: CONST LANI5_D2D : LA : NI : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.1016/s1359-6454(97)00206-1](https://doi.org/10.1016/s1359-6454%2897%2900206-1) T. Yamamoto, H. Inui, M. Yamaguchi, K. Sato, S. Fujitani, I. Yonezu et al., Microstructures and hydrogen absorption/desorption properties of La Ni alloys in the composition range of La 77.8 ∼ 83.2 at.%Ni, Acta Materialia 45, 5213-5221 (1997).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_

## LIQUID (La–Ni)

- Id: `phase:la-ni:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 5 of 5 calculated diagram(s): 784.25–2500 K, x(Ni) 0–1
- Literature: 142 values (142 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-ni:liquid)

Names (10): _corpus: _corpus:phase:la-ni:liquid  
_paper: _paper:10.1007/s10853-022-08039-1:L, paper:10.1016/j.calphad.2012.12.002:L, paper:10.1016/s0925-8388(00)01151-8:Liq, paper:10.1016/s0925-8388(97)00269-7:L  
_tdb: _tdb:LaNi-00Dis.tdb:LIQUID, tdb:LaNi-00Liu-LB.tdb:LIQUID, tdb:LaNi-13An.tdb:LIQUID, tdb:LaNi-23Ye.tdb:LIQUID, tdb:LaNi-98Du.tdb:LIQUID  


### TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written

[LaNi-00Dis.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Dis.tdb): LIQUID, type code %, sha256 `4623d8f930a40e64…`

~~~~text
30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : LA NI : !
~~~~

[LaNi-00Liu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-00Liu-LB.tdb): LIQUID, type code %, sha256 `d1800ee5af113676…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : LA NI : !
~~~~

[LaNi-13An.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-13An.tdb): LIQUID, type code %, sha256 `b745601a215ef14a…`

~~~~text
32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : LA NI : !
~~~~

[LaNi-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-23Ye.tdb): LIQUID, type code %, sha256 `47b0d312ecfc4ba3…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : LA NI : !
~~~~

[LaNi-98Du.tdb](https://orchid-project.org/data/databases/sgte-binary/LaNi-98Du.tdb): LIQUID, type code %, sha256 `ef5d2fcabc9ab23f…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : LA NI : !
~~~~

Example references (8 of 8; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(00)01151-8](https://doi.org/10.1016/S0925-8388%2800%2901151-8) J. Dischinger, H.-J. Schaller, J. Alloys Compd., 312, 201-10(2000).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2012.12.002](https://doi.org/10.1016/j.calphad.2012.12.002) X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(97)00269-7](https://doi.org/10.1016/S0925-8388%2897%2900269-7) Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 264, 209-13(1998).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1515/ijmr-2000-910905](https://doi.org/10.1515/ijmr-2000-910905) L. Liu, Z. Jin, Z. Metallkd., 91, 739-43(2000).  
_assessment that models this phase_
- [doi:10.1007/bf02645085](https://doi.org/10.1007/bf02645085) H Okamoto, La-Ni (Lanthanum-Nickel), JPE 12, 615-616 (1991).  
_cited as the source of values for this phase_
- [doi:10.2320/matertrans1989.30.583](https://doi.org/10.2320/matertrans1989.30.583) Guojun Qi, Ziqiang Li, Kimio Itagaki, Akira Yazawa, High Temperature Phase Relations in Ni&amp;ndash;RE(RE=La, Ce, Pr, Nd) Binary and Ternary Alloy Systems, Mater. Trans., JIM 30, 583-593 (1989).  
_cited as the source of values for this phase_
- [doi:10.1016/s1359-6454(97)00206-1](https://doi.org/10.1016/s1359-6454%2897%2900206-1) T. Yamamoto, H. Inui, M. Yamaguchi, K. Sato, S. Fujitani, I. Yonezu et al., Microstructures and hydrogen absorption/desorption properties of La Ni alloys in the composition range of La 77.8 ∼ 83.2 at.%Ni, Acta Materialia 45, 5213-5221 (1997).  
_cited as the source of values for this phase_

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).
