Gd–Ni phases

14 phases (tier A 7, tier C 3, liquid 1, needs_review 3); 14 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 · full JSON · Gd–Ni system page · Markdown · field reference

Phases of the Gd–Ni system (14)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:gd-ni:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 1508.26–1587 K, x(Ni) 0–0.00122	1	3
FCC_A1 phase:gd-ni:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2499.42 K, x(Ni) 0.99983–1	5	3
GD2NI17 phase:gd-ni:gd2ni17	Ni17Th2 · hP38 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1557.06 K, x(Ni) 0.89474–0.89474	10	3
GD2NI7 phase:gd-ni:gd2ni7		needs_review	stable in 3 of 3 calculated diagram(s): 300–1532.2 K, x(Ni) 0.77778–0.77778	10	3
GD3NI_HT phase:gd-ni:gd3ni		needs_review	stable in 1 of 1 calculated diagram(s): 910.71–1038.62 K, x(Ni) 0.25–0.25	9	1
GD3NI_D011 phase:gd-ni:gd3ni-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1006.66 K, x(Ni) 0.25–0.25	2	3
GD3NI2 phase:gd-ni:gd3ni2		needs_review	stable in 2 of 2 calculated diagram(s): 300–961.3 K, x(Ni) 0.4–0.4	0	2
GDNI_B33 phase:gd-ni:gdni-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1551.72 K, x(Ni) 0.5–0.5	11	3
GDNI2_C15 phase:gd-ni:gdni2-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1349.39 K, x(Ni) 0.66667–0.66667	10	3
GDNI3 phase:gd-ni:gdni3	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1494.63 K, x(Ni) 0.75–0.75	10	3
GDNI4 phase:gd-ni:gdni4	Co19Sm5 · hP48 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1540.66 K, x(Ni) 0.8–0.8	0	2
GDNI5_D2D phase:gd-ni:gdni5-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1751.79 K, x(Ni) 0.83333–0.83333	14	3
HCP_A3 phase:gd-ni:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1535.04 K, x(Ni) 0–0.00206	5	3
LIQUID phase:gd-ni:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 875.72–2500 K, x(Ni) 0–1	46	3

BCC_A2 (Gd–Ni)

Id: phase:gd-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 3 of 3 calculated diagram(s): 1508.26–1587 K, x(Ni) 0–0.00122
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:bcc-a2
paper: paper:10.1016/j.jallcom.2006.09.068:bcc (Gd)
tdb: tdb:GdNi-15Rah.tdb:BCC_A2, tdb:GdNi-96Su-oldGd.tdb:BCC_A2, tdb:GdNi-96Su.tdb:BCC_A2

TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: BCC_A2, type code %B, sha256 8a33fefaa05b5cf5…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : GD% NI : VA : !

GdNi-96Su-oldGd.tdb: BCC_A2, type code %B, sha256 60b9fc181cb2901a…

44: PHASE BCC_A2 %B 2 1 3 !
45: CONST BCC_A2 : GD% NI : VA : !

GdNi-96Su.tdb: BCC_A2, type code %B, sha256 3dc05d2093b96cfd…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : GD% NI : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase
doi:10.1016/j.jallcom.2006.09.068 Mianliang Huang, Deborah L. Schlagel, Frederick A. Schmidt, Thomas A. Lograsso, Experimental investigation and thermodynamic modeling of the Gd–Si system, Journal of Alloys and Compounds 441, 94-100 (2007).
reports values for this phase

FCC_A1 (Gd–Ni)

Id: phase:gd-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 3 of 3 calculated diagram(s): 300–2499.42 K, x(Ni) 0.99983–1
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:fcc-a1
paper: paper:10.1016/j.jallcom.2015.06.201:Ni
tdb: tdb:GdNi-15Rah.tdb:FCC_A1, tdb:GdNi-96Su-oldGd.tdb:FCC_A1, tdb:GdNi-96Su.tdb:FCC_A1

TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: FCC_A1, type code %A, sha256 8a33fefaa05b5cf5…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : GD NI% : VA : !

GdNi-96Su-oldGd.tdb: FCC_A1, type code %A, sha256 60b9fc181cb2901a…

39: PHASE FCC_A1 %A 2 1 1 !
40: CONST FCC_A1 : GD NI% : VA : !

GdNi-96Su.tdb: FCC_A1, type code %A, sha256 3dc05d2093b96cfd…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : GD NI% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GD2NI17 (Gd–Ni)

Id: phase:gd-ni:gd2ni17; status assigned
Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type st:ni17th2-hp38; 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
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: Gd 0.1053, Ni 0.8947
Stability: stable in 3 of 3 calculated diagram(s): 300–1557.06 K, x(Ni) 0.89474–0.89474
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:gd2ni17
paper: paper:10.1016/j.jallcom.2015.06.201:Gd2Ni17
tdb: tdb:GdNi-15Rah.tdb:GD2NI17, tdb:GdNi-96Su-oldGd.tdb:GD2NI17, tdb:GdNi-96Su.tdb:GD2NI17

TDB models of GD2NI17 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GD2NI17, type code %, sha256 8a33fefaa05b5cf5…

81: PHASE GD2NI17 % 2 2 17 !
82: CONST GD2NI17 : GD : NI : !

GdNi-96Su-oldGd.tdb: GD2NI17, type code %, sha256 60b9fc181cb2901a…

94: PHASE GD2NI17 % 2 2 17 !
95: CONST GD2NI17 : GD : NI : !

GdNi-96Su.tdb: GD2NI17, type code %, sha256 3dc05d2093b96cfd…

91: PHASE GD2NI17 % 2 2 17 !
92: CONST GD2NI17 : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GD2NI7 (Gd–Ni)

Id: phase:gd-ni:gd2ni7; status needs_review
No structure assigned. Why: mp_oqmd_space_groups_differ; no_structure_token; sgte_mmc2_rows_disagree
Candidate (dft_mp): R-3m (166) — on-hull MP Gd2Ni7 at x(NI)=0.7778
Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Gd2 Ni7 at x(NI)=0.7778
Candidate (literature_printed): Ce2Ni7 · hP36 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Ce2Ni7 · hP36 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for GD2NI7: Gd2Ni7 (high T), see also Co7Gd2
Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for GD2NI7: Gd2Ni7 (low T), see also Ce2Ni7
Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-15Rah.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-96Su-oldGd.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-96Su.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
Stoichiometry: Gd 0.2222, Ni 0.7778
Stability: stable in 3 of 3 calculated diagram(s): 300–1532.2 K, x(Ni) 0.77778–0.77778
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:gd2ni7
paper: paper:10.1016/j.jallcom.2015.06.201:Gd2Ni7
tdb: tdb:GdNi-15Rah.tdb:GD2NI7, tdb:GdNi-96Su-oldGd.tdb:GD2NI7, tdb:GdNi-96Su.tdb:GD2NI7

TDB models of GD2NI7 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GD2NI7, type code %, sha256 8a33fefaa05b5cf5…

71: PHASE GD2NI7 % 2 2 7 !
72: CONST GD2NI7 : GD : NI : !

GdNi-96Su-oldGd.tdb: GD2NI7, type code %, sha256 60b9fc181cb2901a…

79: PHASE GD2NI7 % 2 2 7 !
80: CONST GD2NI7 : GD : NI : !

GdNi-96Su.tdb: GD2NI7, type code %, sha256 3dc05d2093b96cfd…

76: PHASE GD2NI7 % 2 2 7 !
77: CONST GD2NI7 : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GD3NI_HT (Gd–Ni)

Id: phase:gd-ni:gd3ni; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Gd3 Ni1 at x(NI)=0.2500
Candidate (literature_printed): (Gd3Ni-ht) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Gd3Ni-ht) — Hallstedt 2025 mmc2 row for GD3NI_HT: Gd3Ni (high T)
Stoichiometry: Gd 0.7500, Ni 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 910.71–1038.62 K, x(Ni) 0.25–0.25
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-ni:gd3ni, corpus:phase:gd-ni:gd3ni-ht
paper: paper:10.1016/j.jallcom.2015.06.201:Gd3Ni_HT
tdb: tdb:GdNi-15Rah.tdb:GD3NI_HT

TDB models of GD3NI_HT (1): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GD3NI_HT, type code %, sha256 8a33fefaa05b5cf5…

51: PHASE GD3NI_HT % 2 3 1 !
52: CONST GD3NI_HT : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase

GD3NI_D011 (Gd–Ni)

Id: phase:gd-ni:gd3ni-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Stoichiometry: Gd 0.7500, Ni 0.2500
Stability: stable in 3 of 3 calculated diagram(s): 300–1006.66 K, x(Ni) 0.25–0.25
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:gd3ni-d011
paper: paper:10.1016/j.jallcom.2015.06.201:Gd3Ni_LT
tdb: tdb:GdNi-15Rah.tdb:GD3NI_D011, tdb:GdNi-96Su-oldGd.tdb:GD3NI_D011, tdb:GdNi-96Su.tdb:GD3NI_D011

TDB models of GD3NI_D011 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GD3NI_D011, type code %, sha256 8a33fefaa05b5cf5…

46: PHASE GD3NI_D011 % 2 3 1 !
47: CONST GD3NI_D011 : GD : NI : !

GdNi-96Su-oldGd.tdb: GD3NI_D011, type code %, sha256 60b9fc181cb2901a…

54: PHASE GD3NI_D011 % 2 3 1 !
55: CONST GD3NI_D011 : GD : NI : !

GdNi-96Su.tdb: GD3NI_D011, type code %, sha256 3dc05d2093b96cfd…

51: PHASE GD3NI_D011 % 2 3 1 !
52: CONST GD3NI_D011 : GD : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GD3NI2 (Gd–Ni)

Id: phase:gd-ni:gd3ni2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Gd3Ni2) — Hallstedt 2025 mmc2 row for GD3NI2: Gd3Ni2
Stoichiometry: Gd 0.6000, Ni 0.4000
Stability: stable in 2 of 2 calculated diagram(s): 300–961.3 K, x(Ni) 0.4–0.4
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-ni:gd3ni2
tdb: tdb:GdNi-96Su-oldGd.tdb:GD3NI2, tdb:GdNi-96Su.tdb:GD3NI2

TDB models of GD3NI2 (2): PHASE and CONSTITUENT statements as written

GdNi-96Su-oldGd.tdb: GD3NI2, type code %, sha256 60b9fc181cb2901a…

59: PHASE GD3NI2 % 2 3 2 !
60: CONST GD3NI2 : GD : NI : !

GdNi-96Su.tdb: GD3NI2, type code %, sha256 3dc05d2093b96cfd…

56: PHASE GD3NI2 % 2 3 2 !
57: CONST GD3NI2 : GD : NI : !

GDNI_B33 (Gd–Ni)

Id: phase:gd-ni:gdni-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-aaabewsm and oqmd-31223, space group 63
Stoichiometry: Gd 0.5000, Ni 0.5000
Stability: stable in 3 of 3 calculated diagram(s): 300–1551.72 K, x(Ni) 0.5–0.5
Literature: 11 values (11 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:gd-ni:gdni-b33
mp: mp:mp-aaabewsm
oqmd: oqmd:oqmd-31223
paper: paper:10.1016/j.jallcom.2015.06.201:GdNi
tdb: tdb:GdNi-15Rah.tdb:GDNI_B33, tdb:GdNi-96Su-oldGd.tdb:GDNI_B33, tdb:GdNi-96Su.tdb:GDNI_B33

TDB models of GDNI_B33 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GDNI_B33, type code %, sha256 8a33fefaa05b5cf5…

56: PHASE GDNI_B33 % 2 1 1 !
57: CONST GDNI_B33 : GD : NI : !

GdNi-96Su-oldGd.tdb: GDNI_B33, type code %, sha256 60b9fc181cb2901a…

64: PHASE GDNI_B33 % 2 1 1 !
65: CONST GDNI_B33 : GD : NI : !

GdNi-96Su.tdb: GDNI_B33, type code %, sha256 3dc05d2093b96cfd…

61: PHASE GDNI_B33 % 2 1 1 !
62: CONST GDNI_B33 : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase

GDNI2_C15 (Gd–Ni)

Id: phase:gd-ni:gdni2-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaabexhj and oqmd-18494, space group 227
Stoichiometry: Gd 0.3333, Ni 0.6667
Stability: stable in 3 of 3 calculated diagram(s): 300–1349.39 K, x(Ni) 0.66667–0.66667
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:gd-ni:gdni2-c15
mp: mp:mp-aaabexhj
oqmd: oqmd:oqmd-18494
paper: paper:10.1016/j.jallcom.2015.06.201:GdNi2
tdb: tdb:GdNi-15Rah.tdb:GDNI2_C15, tdb:GdNi-96Su-oldGd.tdb:GDNI2_C15, tdb:GdNi-96Su.tdb:GDNI2_C15

TDB models of GDNI2_C15 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GDNI2_C15, type code %, sha256 8a33fefaa05b5cf5…

61: PHASE GDNI2_C15 % 2 1 2 !
62: CONST GDNI2_C15 : GD : NI : !

GdNi-96Su-oldGd.tdb: GDNI2_C15, type code %, sha256 60b9fc181cb2901a…

69: PHASE GDNI2_C15 % 2 1 2 !
70: CONST GDNI2_C15 : GD : NI : !

GdNi-96Su.tdb: GDNI2_C15, type code %, sha256 3dc05d2093b96cfd…

66: PHASE GDNI2_C15 % 2 1 2 !
67: CONST GDNI2_C15 : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GDNI3 (Gd–Ni)

Id: phase:gd-ni:gdni3; 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
Caveat: not certain from the name or DFT alone (dft_space_group_166_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Gd 0.2500, Ni 0.7500
Stability: stable in 3 of 3 calculated diagram(s): 300–1494.63 K, x(Ni) 0.75–0.75
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:gdni3
paper: paper:10.1016/j.jallcom.2015.06.201:GdNi3
tdb: tdb:GdNi-15Rah.tdb:GDNI3, tdb:GdNi-96Su-oldGd.tdb:GDNI3, tdb:GdNi-96Su.tdb:GDNI3

TDB models of GDNI3 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GDNI3, type code %, sha256 8a33fefaa05b5cf5…

66: PHASE GDNI3 % 2 1 3 !
67: CONST GDNI3 : GD : NI : !

GdNi-96Su-oldGd.tdb: GDNI3, type code %, sha256 60b9fc181cb2901a…

74: PHASE GDNI3 % 2 1 3 !
75: CONST GDNI3 : GD : NI : !

GdNi-96Su.tdb: GDNI3, type code %, sha256 3dc05d2093b96cfd…

71: PHASE GDNI3 % 2 1 3 !
72: CONST GDNI3 : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

GDNI4 (Gd–Ni)

Id: phase:gd-ni:gdni4; 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
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: Gd 0.2000, Ni 0.8000
Stability: stable in 2 of 2 calculated diagram(s): 300–1540.66 K, x(Ni) 0.8–0.8
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-ni:gdni4
tdb: tdb:GdNi-96Su-oldGd.tdb:GDNI4, tdb:GdNi-96Su.tdb:GDNI4

TDB models of GDNI4 (2): PHASE and CONSTITUENT statements as written

GdNi-96Su-oldGd.tdb: GDNI4, type code %, sha256 60b9fc181cb2901a…

84: PHASE GDNI4 % 2 1 4 !
85: CONST GDNI4 : GD : NI : !

GdNi-96Su.tdb: GDNI4, type code %, sha256 3dc05d2093b96cfd…

81: PHASE GDNI4 % 2 1 4 !
82: CONST GDNI4 : GD : NI : !

GDNI5_D2D (Gd–Ni)

Id: phase:gd-ni:gdni5-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: DFT agrees: on-hull mp-aaaabfnl and oqmd-18493, space group 191
Stoichiometry: Gd 0.1667, Ni 0.8333
Stability: stable in 3 of 3 calculated diagram(s): 300–1751.79 K, x(Ni) 0.83333–0.83333
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:gd-ni:gdni5-d2d
mp: mp:mp-aaaabfnl
oqmd: oqmd:oqmd-18493
paper: paper:10.1016/j.jallcom.2015.06.201:GdNi5
tdb: tdb:GdNi-15Rah.tdb:GDNI5_D2D, tdb:GdNi-96Su-oldGd.tdb:GDNI5_D2D, tdb:GdNi-96Su.tdb:GDNI5_D2D

TDB models of GDNI5_D2D (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: GDNI5_D2D, type code %, sha256 8a33fefaa05b5cf5…

76: PHASE GDNI5_D2D % 2 1 5 !
77: CONST GDNI5_D2D : GD : NI : !

GdNi-96Su-oldGd.tdb: GDNI5_D2D, type code %, sha256 60b9fc181cb2901a…

89: PHASE GDNI5_D2D % 2 1 5 !
90: CONST GDNI5_D2D : GD : NI : !

GdNi-96Su.tdb: GDNI5_D2D, type code %, sha256 3dc05d2093b96cfd…

86: PHASE GDNI5_D2D % 2 1 5 !
87: CONST GDNI5_D2D : GD : NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

HCP_A3 (Gd–Ni)

Id: phase:gd-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
Stability: stable in 3 of 3 calculated diagram(s): 300–1535.04 K, x(Ni) 0–0.00206
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-ni:hcp-a3
paper: paper:10.1016/j.jallcom.2015.06.201:α-Gd
tdb: tdb:GdNi-15Rah.tdb:HCP_A3, tdb:GdNi-96Su-oldGd.tdb:HCP_A3, tdb:GdNi-96Su.tdb:HCP_A3

TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

GdNi-15Rah.tdb: HCP_A3, type code %, sha256 8a33fefaa05b5cf5…

41: PHASE HCP_A3 % 2 1 0.5 !
42: CONST HCP_A3 : GD% NI : VA : !

GdNi-96Su-oldGd.tdb: HCP_A3, type code %, sha256 60b9fc181cb2901a…

49: PHASE HCP_A3 % 2 1 0.5 !
50: CONST HCP_A3 : GD% NI : VA : !

GdNi-96Su.tdb: HCP_A3, type code %, sha256 3dc05d2093b96cfd…

46: PHASE HCP_A3 % 2 1 0.5 !
47: CONST HCP_A3 : GD% NI : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase

LIQUID (Gd–Ni)

Id: phase:gd-ni:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 875.72–2500 K, x(Ni) 0–1
Literature: 46 values (46 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:gd-ni:liquid
paper: paper:10.1016/j.jallcom.2006.09.068:Liquid, paper:10.1016/j.jallcom.2015.06.201:Liquid
tdb: tdb:GdNi-15Rah.tdb:LIQUID, tdb:GdNi-96Su-oldGd.tdb:LIQUID, tdb:GdNi-96Su.tdb:LIQUID

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

GdNi-15Rah.tdb: LIQUID, type code %, sha256 8a33fefaa05b5cf5…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : GD NI : !

GdNi-96Su-oldGd.tdb: LIQUID, type code %, sha256 60b9fc181cb2901a…

34: PHASE LIQUID:L % 1 1 !
35: CONST LIQUID:L : GD NI : !

GdNi-96Su.tdb: LIQUID, type code %, sha256 3dc05d2093b96cfd…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : GD NI : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2015.06.201 Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19981020918 J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).
cited as the source of values for this phase
doi:10.3139/146.110756 Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2006.09.068 Mianliang Huang, Deborah L. Schlagel, Frederick A. Schmidt, Thomas A. Lograsso, Experimental investigation and thermodynamic modeling of the Gd–Si system, Journal of Alloys and Compounds 441, 94-100 (2007).
reports 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). doi: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). doi: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.

@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}
}