# Nd–Sn phases

> Nd–Sn system: 20 phases (tier A 9, tier B 3, tier C 2, liquid 1, needs_review 5); 17 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/ND-SN.html · Markdown: https://data.orchid-project.org/phases/pages/ND-SN.md

20 phases (tier A 9, tier B 3, tier C 2, liquid 1, needs_review 5); 17 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=ND-SN) · [full JSON](https://data.orchid-project.org/phases/systems/ND-SN.json) · [Nd–Sn system page](https://data.orchid-project.org/systems/ND-SN.html) · [Markdown](https://data.orchid-project.org/phases/pages/ND-SN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Nd–Sn system (20)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [DIAMOND_A4](#phase-nd-sn-a4-diamond); _phase:nd-sn:a4-diamond_ | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [BCT_A5](#phase-nd-sn-a5-bct); _phase:nd-sn:a5-bct_ | beta-Sn · A5 · tI4 · I4_1/amd (141) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–505.07 K, x(Sn) 1–1 | 0 | 2 |
| [BCC_A2](#phase-nd-sn-bcc-a2); _phase:nd-sn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1072.78–1289 K, x(Sn) 0–0.05571 | 0 | 2 |
| [DHCP](#phase-nd-sn-dhcp-a3); _phase:nd-sn:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1138.25 K, x(Sn) 0–0.01922 | 0 | 2 |
| [FCC_A1](#phase-nd-sn-fcc-a1); _phase:nd-sn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [HCP_A3](#phase-nd-sn-hcp-a3); _phase:nd-sn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [LIQUID](#phase-nd-sn-liquid); _phase:nd-sn:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 505.03–2500 K, x(Sn) 0–1 | 0 | 2 |
| [ND11SN10](#phase-nd-sn-nd11sn10); _phase:nd-sn:nd11sn10_ | Ge10Ho11 · tI84 · I4/mmm (139) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1670.19 K, x(Sn) 0.47619–0.47619 | 0 | 2 |
| [ND2SN](#phase-nd-sn-nd2sn); _phase:nd-sn:nd2sn_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1405.2 K, x(Sn) 0.33333–0.33333 | 0 | 1 |
| [ND2SN3](#phase-nd-sn-nd2sn3); _phase:nd-sn:nd2sn3_ | Nd2Sn3 · aP20 · P-1 (2) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–1420.63 K, x(Sn) 0.6–0.6 | 0 | 1 |
| [ND2SN5](#phase-nd-sn-nd2sn5); _phase:nd-sn:nd2sn5_ | Ce2Sn5 · oC28 · Cmmm (65) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1414.84 K, x(Sn) 0.71429–0.71429 | 0 | 2 |
| [ND3SN_L12](#phase-nd-sn-nd3sn-l12); _phase:nd-sn:nd3sn-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1383.88–1436.07 K, x(Sn) 0.25–0.25 | 0 | 1 |
| [ND3SN5](#phase-nd-sn-nd3sn5); _phase:nd-sn:nd3sn5_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1425.24 K, x(Sn) 0.625–0.625 | 0 | 2 |
| [ND3SN7](#phase-nd-sn-nd3sn7); _phase:nd-sn:nd3sn7_ | Ce3Sn7 · oC20 · Cmmm (65) | tier B: DFT-supported (unique MP + OQMD match) | stable in 2 of 2 calculated diagram(s): 300–1433.4 K, x(Sn) 0.7–0.7 | 0 | 2 |
| [ND4SN5](#phase-nd-sn-nd4sn5); _phase:nd-sn:nd4sn5_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1439.89 K, x(Sn) 0.55556–0.55556 | 0 | 1 |
| [ND5SN3_D88](#phase-nd-sn-nd5sn3-d88); _phase:nd-sn:nd5sn3-d88_ | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1933.21 K, x(Sn) 0.375–0.375 | 0 | 2 |
| [ND5SN4](#phase-nd-sn-nd5sn4); _phase:nd-sn:nd5sn4_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1830.78 K, x(Sn) 0.44444–0.44444 | 0 | 2 |
| [NDSN](#phase-nd-sn-ndsn); _phase:nd-sn:ndsn_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1530.46 K, x(Sn) 0.5–0.5 | 0 | 2 |
| [NDSN2](#phase-nd-sn-ndsn2); _phase:nd-sn:ndsn2_ | Ga2Zr · oC12 · Cmmm (65) | tier B: DFT-supported (unique MP + OQMD match) | stable in 2 of 2 calculated diagram(s): 300–1453.29 K, x(Sn) 0.66667–0.66667 | 0 | 2 |
| [NDSN3_L12](#phase-nd-sn-ndsn3-l12); _phase:nd-sn:ndsn3-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1413.57 K, x(Sn) 0.75–0.75 | 0 | 2 |

## DIAMOND_A4 (Nd–Sn)

- Id: `phase:nd-sn:a4-diamond`; status `assigned`
- Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type `st:a4-c-diamond-cf8`; tier A: standard phase name; confidence high
- Stoichiometry: Sn 1.0000
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:a4-diamond)

Names (3): _corpus: _corpus:phase:nd-sn:a4-diamond  
_tdb: _tdb:NdSn-18Wan.tdb:DIAMOND_A4, tdb:NdSn-24He.tdb:DIAMOND_A4  


### TDB models of DIAMOND_A4 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): DIAMOND_A4, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
46: PHASE DIAMOND_A4 % 1 1 !
47: CONST DIAMOND_A4 : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): DIAMOND_A4, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
56: PHASE DIAMOND_A4 % 1 1 !
57: CONST DIAMOND_A4 : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## BCT_A5 (Nd–Sn)

- Id: `phase:nd-sn:a5-bct`; status `assigned`
- Structure: beta-Sn · A5 · tI4 · I4_1/amd (141); type `st:a5-beta-sn-ti4`; tier A: standard phase name; confidence high
- Stoichiometry: Sn 1.0000
- Stability: stable in 2 of 2 calculated diagram(s): 300–505.07 K, x(Sn) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:a5-bct)

Names (3): _corpus: _corpus:phase:nd-sn:a5-bct  
_tdb: _tdb:NdSn-18Wan.tdb:BCT_A5, tdb:NdSn-24He.tdb:BCT_A5  


### TDB models of BCT_A5 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): BCT_A5, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
51: PHASE BCT_A5 % 1 1 !
52: CONST BCT_A5 : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): BCT_A5, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
61: PHASE BCT_A5 % 1 1 !
62: CONST BCT_A5 : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## BCC_A2 (Nd–Sn)

- Id: `phase:nd-sn: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 2 of 2 calculated diagram(s): 1072.78–1289 K, x(Sn) 0–0.05571
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:bcc-a2)

Names (3): _corpus: _corpus:phase:nd-sn:bcc-a2  
_tdb: _tdb:NdSn-18Wan.tdb:BCC_A2, tdb:NdSn-24He.tdb:BCC_A2  


### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): BCC_A2, type code %B, sha256 `4721c8d300ba1e9b…`

~~~~text
31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : ND% SN : VA : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): BCC_A2, type code %B, sha256 `deb38f0dc9dbf245…`

~~~~text
41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : ND% SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## DHCP (Nd–Sn)

- Id: `phase:nd-sn: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 2 of 2 calculated diagram(s): 300–1138.25 K, x(Sn) 0–0.01922
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:dhcp-a3)

Names (3): _corpus: _corpus:phase:nd-sn:dhcp-a3  
_tdb: _tdb:NdSn-18Wan.tdb:DHCP, tdb:NdSn-24He.tdb:DHCP  


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

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): DHCP, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
41: PHASE DHCP % 1 1 !
42: CONST DHCP : ND% SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): DHCP, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
51: PHASE DHCP % 1 1 !
52: CONST DHCP : ND% SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## FCC_A1 (Nd–Sn)

- Id: `phase:nd-sn:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:fcc-a1)

Names (3): _corpus: _corpus:phase:nd-sn:fcc-a1  
_tdb: _tdb:NdSn-18Wan.tdb:FCC_A1, tdb:NdSn-24He.tdb:FCC_A1  


### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): FCC_A1, type code %A, sha256 `4721c8d300ba1e9b…`

~~~~text
26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : ND SN : VA : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): FCC_A1, type code %A, sha256 `deb38f0dc9dbf245…`

~~~~text
36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : ND SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## HCP_A3 (Nd–Sn)

- Id: `phase:nd-sn:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:hcp-a3)

Names (3): _corpus: _corpus:phase:nd-sn:hcp-a3  
_tdb: _tdb:NdSn-18Wan.tdb:HCP_A3, tdb:NdSn-24He.tdb:HCP_A3  


### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): HCP_A3, type code %A, sha256 `4721c8d300ba1e9b…`

~~~~text
36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : ND% SN : VA : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): HCP_A3, type code %A, sha256 `deb38f0dc9dbf245…`

~~~~text
46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : ND% SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## LIQUID (Nd–Sn)

- Id: `phase:nd-sn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 505.03–2500 K, x(Sn) 0–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:liquid)

Names (3): _corpus: _corpus:phase:nd-sn:liquid  
_tdb: _tdb:NdSn-18Wan.tdb:LIQUID, tdb:NdSn-24He.tdb:LIQUID  


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

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): LIQUID, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : ND SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): LIQUID, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : ND SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND11SN10 (Nd–Sn)

- Id: `phase:nd-sn:nd11sn10`; status `assigned`
- Structure: Ge10Ho11 · tI84 · I4/mmm (139); type `st:ge10ho11-ti84`; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Nd 0.5238, Sn 0.4762
- Stability: stable in 2 of 2 calculated diagram(s): 300–1670.19 K, x(Sn) 0.47619–0.47619
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd11sn10)

Names (3): _corpus: _corpus:phase:nd-sn:nd11sn10  
_tdb: _tdb:NdSn-18Wan.tdb:ND11SN10, tdb:NdSn-24He.tdb:ND11SN10  


### TDB models of ND11SN10 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND11SN10, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
66: PHASE ND11SN10 % 2 11 10 !
67: CONST ND11SN10 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND11SN10, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
86: PHASE ND11SN10 % 2 11 10 !
87: CONST ND11SN10 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND2SN (Nd–Sn)

- Id: `phase:nd-sn:nd2sn`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Nd2Sn) — Hallstedt 2025 mmc2 row for ND2SN: Nd2Sn
- Stoichiometry: Nd 0.6667, Sn 0.3333
- Stability: stable in 1 of 1 calculated diagram(s): 300–1405.2 K, x(Sn) 0.33333–0.33333
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd2sn)

Names (2): _corpus: _corpus:phase:nd-sn:nd2sn  
_tdb: _tdb:NdSn-24He.tdb:ND2SN  


### TDB models of ND2SN (1): PHASE and CONSTITUENT statements as written

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND2SN, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
71: PHASE ND2SN % 2 2 1 !
72: CONST ND2SN : ND : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND2SN3 (Nd–Sn)

- Id: `phase:nd-sn:nd2sn3`; status `assigned`
- Structure: Nd2Sn3 · aP20 · P-1 (2); type `st:nd2sn3-ap20`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Nd 0.4000, Sn 0.6000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1420.63 K, x(Sn) 0.6–0.6
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd2sn3)

Names (4): _corpus: _corpus:phase:nd-sn:nd2sn3  
_mp: _mp:mp-aaaabsva  
_oqmd: _oqmd:oqmd-25721  
_tdb: _tdb:NdSn-24He.tdb:ND2SN3  


### TDB models of ND2SN3 (1): PHASE and CONSTITUENT statements as written

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND2SN3, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
101: PHASE ND2SN3 % 2 2 3 !
102: CONST ND2SN3 : ND : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND2SN5 (Nd–Sn)

- Id: `phase:nd-sn:nd2sn5`; status `assigned`
- Structure: Ce2Sn5 · oC28 · Cmmm (65); type `st:ce2sn5-oc28`; 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: Nd 0.2857, Sn 0.7143
- Stability: stable in 2 of 2 calculated diagram(s): 300–1414.84 K, x(Sn) 0.71429–0.71429
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd2sn5)

Names (3): _corpus: _corpus:phase:nd-sn:nd2sn5  
_tdb: _tdb:NdSn-18Wan.tdb:ND2SN5, tdb:NdSn-24He.tdb:ND2SN5  


### TDB models of ND2SN5 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND2SN5, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
91: PHASE ND2SN5 % 2 2 5 !
92: CONST ND2SN5 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND2SN5, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
121: PHASE ND2SN5 % 2 2 5 !
122: CONST ND2SN5 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND3SN_L12 (Nd–Sn)

- Id: `phase:nd-sn:nd3sn-l12`; status `assigned`
- Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type `st:l1-2-aucu3-cp4`; tier A: standard phase name; confidence high
- Stoichiometry: Nd 0.7500, Sn 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 1383.88–1436.07 K, x(Sn) 0.25–0.25
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd3sn-l12)

Names (2): _corpus: _corpus:phase:nd-sn:nd3sn-l12  
_tdb: _tdb:NdSn-24He.tdb:ND3SN_L12  


### TDB models of ND3SN_L12 (1): PHASE and CONSTITUENT statements as written

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND3SN_L12, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
66: PHASE ND3SN_L12 % 2 3 1 !
67: CONST ND3SN_L12 : ND : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND3SN5 (Nd–Sn)

- Id: `phase:nd-sn:nd3sn5`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Nd3Sn5) — Hallstedt 2025 mmc2 row for ND3SN5: Nd3Sn5
- Stoichiometry: Nd 0.3750, Sn 0.6250
- Stability: stable in 2 of 2 calculated diagram(s): 300–1425.24 K, x(Sn) 0.625–0.625
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd3sn5)

Names (3): _corpus: _corpus:phase:nd-sn:nd3sn5  
_tdb: _tdb:NdSn-18Wan.tdb:ND3SN5, tdb:NdSn-24He.tdb:ND3SN5  


### TDB models of ND3SN5 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND3SN5, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
76: PHASE ND3SN5 % 2 3 5 !
77: CONST ND3SN5 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND3SN5, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
106: PHASE ND3SN5 % 2 3 5 !
107: CONST ND3SN5 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND3SN7 (Nd–Sn)

- Id: `phase:nd-sn:nd3sn7`; status `assigned`
- Structure: Ce3Sn7 · oC20 · Cmmm (65); type `st:ce3sn7-oc20`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Nd 0.3000, Sn 0.7000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1433.4 K, x(Sn) 0.7–0.7
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd3sn7)

Names (5): _corpus: _corpus:phase:nd-sn:nd3sn7  
_mp: _mp:mp-aaacqqmw  
_oqmd: _oqmd:oqmd-1453997  
_tdb: _tdb:NdSn-18Wan.tdb:ND3SN7, tdb:NdSn-24He.tdb:ND3SN7  


### TDB models of ND3SN7 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND3SN7, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
86: PHASE ND3SN7 % 2 3 7 !
87: CONST ND3SN7 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND3SN7, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
116: PHASE ND3SN7 % 2 3 7 !
117: CONST ND3SN7 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND4SN5 (Nd–Sn)

- Id: `phase:nd-sn:nd4sn5`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Nd4Sn5) — Hallstedt 2025 mmc2 row for ND4SN5: Nd4Sn5
- Stoichiometry: Nd 0.4444, Sn 0.5556
- Stability: stable in 1 of 1 calculated diagram(s): 300–1439.89 K, x(Sn) 0.55556–0.55556
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd4sn5)

Names (2): _corpus: _corpus:phase:nd-sn:nd4sn5  
_tdb: _tdb:NdSn-24He.tdb:ND4SN5  


### TDB models of ND4SN5 (1): PHASE and CONSTITUENT statements as written

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND4SN5, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
96: PHASE ND4SN5 % 2 4 5 !
97: CONST ND4SN5 : ND : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND5SN3_D88 (Nd–Sn)

- Id: `phase:nd-sn:nd5sn3-d88`; status `assigned`
- Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type `st:d8-8-mn5si3-hp16`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaabdbet and oqmd-647405, space group 193
- Stoichiometry: Nd 0.6250, Sn 0.3750
- Stability: stable in 2 of 2 calculated diagram(s): 300–1933.21 K, x(Sn) 0.375–0.375
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd5sn3-d88)

Names (5): _corpus: _corpus:phase:nd-sn:nd5sn3-d88  
_mp: _mp:mp-aaabdbet  
_oqmd: _oqmd:oqmd-647405  
_tdb: _tdb:NdSn-18Wan.tdb:ND5SN3_D88, tdb:NdSn-24He.tdb:ND5SN3_D88  


### TDB models of ND5SN3_D88 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND5SN3_D88, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
56: PHASE ND5SN3_D88 % 2 5 3 !
57: CONST ND5SN3_D88 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND5SN3_D88, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
76: PHASE ND5SN3_D88 % 2 5 3 !
77: CONST ND5SN3_D88 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## ND5SN4 (Nd–Sn)

- Id: `phase:nd-sn:nd5sn4`; status `needs_review`
- No structure assigned. Why: dft_space_group_62_matches_2_structure_types; no_structure_token
- Candidate (dft_mp): Pnma (62) — on-hull MP Nd5Sn4 at x(SN)=0.4444
- Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Nd5 Sn4 at x(SN)=0.4444
- Candidate (dft_space_group_and_stoichiometry): Gd5Si4 · oP36 · Pnma (62) — space group 62 and stoichiometry match
- Candidate (dft_space_group_and_stoichiometry): Ge4Sm5 · oP36 · Pnma (62) — space group 62 and stoichiometry match
- Candidate (tdb_comment): Ge4Sm5 · oP36 · Pnma — NdSn-18Wan.tdb: 'Prototype Ge4Sm5 (oP36, Pnma)'
- Candidate (tdb_comment): Ge4Sm5 · oP36 · Pnma — NdSn-24He.tdb: 'Prototype Ge4Sm5 (oP36, Pnma)'
- Stoichiometry: Nd 0.5556, Sn 0.4444
- Stability: stable in 2 of 2 calculated diagram(s): 300–1830.78 K, x(Sn) 0.44444–0.44444
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:nd5sn4)

Names (3): _corpus: _corpus:phase:nd-sn:nd5sn4  
_tdb: _tdb:NdSn-18Wan.tdb:ND5SN4, tdb:NdSn-24He.tdb:ND5SN4  


### TDB models of ND5SN4 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): ND5SN4, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
61: PHASE ND5SN4 % 2 5 4 !
62: CONST ND5SN4 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): ND5SN4, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
81: PHASE ND5SN4 % 2 5 4 !
82: CONST ND5SN4 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## NDSN (Nd–Sn)

- Id: `phase:nd-sn:ndsn`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Nd1 Sn1 at x(SN)=0.5000
- Candidate (sgte_mmc2): (NdSn) — Hallstedt 2025 mmc2 row for NDSN: NdSn
- Stoichiometry: Nd 0.5000, Sn 0.5000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1530.46 K, x(Sn) 0.5–0.5
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:ndsn)

Names (3): _corpus: _corpus:phase:nd-sn:ndsn  
_tdb: _tdb:NdSn-18Wan.tdb:NDSN, tdb:NdSn-24He.tdb:NDSN  


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

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): NDSN, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
71: PHASE NDSN % 2 1 1 !
72: CONST NDSN : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): NDSN, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
91: PHASE NDSN % 2 1 1 !
92: CONST NDSN : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## NDSN2 (Nd–Sn)

- Id: `phase:nd-sn:ndsn2`; status `assigned`
- Structure: Ga2Zr · oC12 · Cmmm (65); type `st:ga2zr-oc12`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Nd 0.3333, Sn 0.6667
- Stability: stable in 2 of 2 calculated diagram(s): 300–1453.29 K, x(Sn) 0.66667–0.66667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:ndsn2)

Names (5): _corpus: _corpus:phase:nd-sn:ndsn2  
_mp: _mp:mp-aaaaasun  
_oqmd: _oqmd:oqmd-647404  
_tdb: _tdb:NdSn-18Wan.tdb:NDSN2, tdb:NdSn-24He.tdb:NDSN2  


### TDB models of NDSN2 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): NDSN2, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
81: PHASE NDSN2 % 2 1 2 !
82: CONST NDSN2 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): NDSN2, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
111: PHASE NDSN2 % 2 1 2 !
112: CONST NDSN2 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models this phase_

## NDSN3_L12 (Nd–Sn)

- Id: `phase:nd-sn:ndsn3-l12`; status `assigned`
- Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type `st:l1-2-aucu3-cp4`; tier A: standard phase name; confidence high
- Stoichiometry: Nd 0.2500, Sn 0.7500
- Stability: stable in 2 of 2 calculated diagram(s): 300–1413.57 K, x(Sn) 0.75–0.75
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:nd-sn:ndsn3-l12)

Names (3): _corpus: _corpus:phase:nd-sn:ndsn3-l12  
_tdb: _tdb:NdSn-18Wan.tdb:NDSN3_L12, tdb:NdSn-24He.tdb:NDSN3_L12  


### TDB models of NDSN3_L12 (2): PHASE and CONSTITUENT statements as written

[NdSn-18Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-18Wan.tdb): NDSN3_L12, type code %, sha256 `4721c8d300ba1e9b…`

~~~~text
96: PHASE NDSN3_L12 % 2 1 3 !
97: CONST NDSN3_L12 : ND : SN : !
~~~~

[NdSn-24He.tdb](https://orchid-project.org/data/databases/sgte-binary/NdSn-24He.tdb): NDSN3_L12, type code %, sha256 `deb38f0dc9dbf245…`

~~~~text
126: PHASE NDSN3_L12 % 2 1 3 !
127: CONST NDSN3_L12 : ND : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2017.12.009](https://doi.org/10.1016/j.calphad.2017.12.009) S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2024.102757](https://doi.org/10.1016/j.calphad.2024.102757) C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).  
_assessment that models 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).