Ni–Tb phases

12 phases (tier A 6, tier C 4, liquid 1, needs_review 1); 12 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 · Ni–Tb system page · Markdown · field reference

Phases of the Ni–Tb system (12)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:ni-tb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 1562–2499.51 K, x(Tb) 0.99971–1	2	3
FCC_A1 phase:ni-tb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1796.93 K, x(Tb) 0–0	10	3
HCP_A3 phase:ni-tb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1562.02 K, x(Tb) 0.99953–1	12	3
LIQUID phase:ni-tb:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 991.93–2500 K, x(Tb) 0–1	110	3
NI17TB2 phase:ni-tb:ni17tb2	Ni17Th2 · hP38 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1559.64 K, x(Tb) 0.10526–0.10526	22	3
NI2TB_C15 phase:ni-tb:ni2tb-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1415.47 K, x(Tb) 0.33333–0.33333	22	3
NI2TB3 phase:ni-tb:ni2tb3	Dy3Ni2 · mC20 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1101.49 K, x(Tb) 0.6–0.6	22	3
NI3TB phase:ni-tb:ni3tb	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1503.58 K, x(Tb) 0.25–0.25	22	3
NI5TB_D2D phase:ni-tb:ni5tb-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1663.06 K, x(Tb) 0.16667–0.16667	30	3
NI7TB2 phase:ni-tb:ni7tb2		needs_review	stable in 3 of 3 calculated diagram(s): 300–1565.13 K, x(Tb) 0.22222–0.22222	21	3
NITB phase:ni-tb:nitb	NiTb · mP24 · P2_1/m (11)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1266.03 K, x(Tb) 0.5–0.5	32	3
NITB3_D011 phase:ni-tb:nitb3-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1061.5 K, x(Tb) 0.75–0.75	22	3

BCC_A2 (Ni–Tb)

Id: phase:ni-tb: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): 1562–2499.51 K, x(Tb) 0.99971–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ni-tb:bcc-a2
paper: paper:10.1007/s10853-022-08039-1:bcc(Tb)
tdb: tdb:NiTb-04Ron.tdb:BCC_A2, tdb:NiTb-23Ye.tdb:BCC_A2, tdb:NiTb-24Rah.tdb:BCC_A2

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

NiTb-04Ron.tdb: BCC_A2, type code %B, sha256 796cc79d9d9131a6…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : NI TB% : VA : !

NiTb-23Ye.tdb: BCC_A2, type code %B, sha256 c5d76ba67dadc803…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : NI TB% : VA : !

NiTb-24Rah.tdb: BCC_A2, type code %B, sha256 cd81bfc018e84565…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : NI TB% : VA : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase

FCC_A1 (Ni–Tb)

Id: phase:ni-tb: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): 300–1796.93 K, x(Tb) 0–0
Literature: 10 values (10 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:fcc-a1
paper: paper:10.1007/s10853-022-08039-1:fcc(Ni), paper:10.1007/s11669-024-01089-9:fcc(Ni), paper:10.1016/s0925-8388(03)00667-4:(Ni)
tdb: tdb:NiTb-04Ron.tdb:FCC_A1, tdb:NiTb-23Ye.tdb:FCC_A1, tdb:NiTb-24Rah.tdb:FCC_A1

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

NiTb-04Ron.tdb: FCC_A1, type code %A, sha256 796cc79d9d9131a6…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : NI : VA : !

NiTb-23Ye.tdb: FCC_A1, type code %A, sha256 c5d76ba67dadc803…

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

NiTb-24Rah.tdb: FCC_A1, type code %A, sha256 cd81bfc018e84565…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : NI% TB : VA : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

HCP_A3 (Ni–Tb)

Id: phase:ni-tb: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): 300–1562.02 K, x(Tb) 0.99953–1
Literature: 12 values (12 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:hcp-a3
paper: paper:10.1007/s10853-022-08039-1:hcp(Tb), paper:10.1007/s11669-024-01089-9:α-Tb, paper:10.1016/s0925-8388(03)00667-4:(α-Tb)
tdb: tdb:NiTb-04Ron.tdb:HCP_A3, tdb:NiTb-23Ye.tdb:HCP_A3, tdb:NiTb-24Rah.tdb:HCP_A3

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

NiTb-04Ron.tdb: HCP_A3, type code %A, sha256 796cc79d9d9131a6…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : NI TB% : VA : !

NiTb-23Ye.tdb: HCP_A3, type code %A, sha256 c5d76ba67dadc803…

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

NiTb-24Rah.tdb: HCP_A3, type code %A, sha256 cd81bfc018e84565…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : NI TB% : VA : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

LIQUID (Ni–Tb)

Id: phase:ni-tb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 991.93–2500 K, x(Tb) 0–1
Literature: 110 values (110 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:liquid
paper: paper:10.1007/s10853-022-08039-1:L, paper:10.1007/s11669-024-01089-9:L, paper:10.1016/s0925-8388(03)00667-4:Liq
tdb: tdb:NiTb-04Ron.tdb:LIQUID, tdb:NiTb-23Ye.tdb:LIQUID, tdb:NiTb-24Rah.tdb:LIQUID

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

NiTb-04Ron.tdb: LIQUID, type code %, sha256 796cc79d9d9131a6…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : NI TB : !

NiTb-23Ye.tdb: LIQUID, type code %, sha256 c5d76ba67dadc803…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : NI TB : !

NiTb-24Rah.tdb: LIQUID, type code %, sha256 cd81bfc018e84565…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : NI TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI17TB2 (Ni–Tb)

Id: phase:ni-tb:ni17tb2; 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: Ni 0.8947, Tb 0.1053
Stability: stable in 3 of 3 calculated diagram(s): 300–1559.64 K, x(Tb) 0.10526–0.10526
Literature: 22 values (22 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:ni17tb2
paper: paper:10.1007/s10853-022-08039-1:Tb2Ni17, paper:10.1007/s11669-024-01089-9:Tb2Ni17, paper:10.1016/s0925-8388(03)00667-4:Ni17Tb2
tdb: tdb:NiTb-04Ron.tdb:NI17TB2, tdb:NiTb-23Ye.tdb:NI17TB2, tdb:NiTb-24Rah.tdb:NI17TB2

TDB models of NI17TB2 (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI17TB2, type code %, sha256 796cc79d9d9131a6…

48: PHASE NI17TB2 % 2 17 2 !
49: CONST NI17TB2 : NI : TB : !

NiTb-23Ye.tdb: NI17TB2, type code %, sha256 c5d76ba67dadc803…

44: PHASE NI17TB2 % 2 17 2 !
45: CONST NI17TB2 : NI : TB : !

NiTb-24Rah.tdb: NI17TB2, type code %, sha256 cd81bfc018e84565…

45: PHASE NI17TB2 % 2 17 2 !
46: CONST NI17TB2 : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI2TB_C15 (Ni–Tb)

Id: phase:ni-tb:ni2tb-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-aaaaaakq and oqmd-17694, space group 227
Stoichiometry: Ni 0.6667, Tb 0.3333
Stability: stable in 3 of 3 calculated diagram(s): 300–1415.47 K, x(Tb) 0.33333–0.33333
Literature: 22 values (22 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:ni-tb:ni2tb-c15
mp: mp:mp-aaaaaakq
oqmd: oqmd:oqmd-17694
paper: paper:10.1007/s10853-022-08039-1:TbNi2, paper:10.1007/s11669-024-01089-9:TbNi2, paper:10.1016/s0925-8388(03)00667-4:Ni2Tb
tdb: tdb:NiTb-04Ron.tdb:NI2TB_C15, tdb:NiTb-23Ye.tdb:NI2TB_C15, tdb:NiTb-24Rah.tdb:NI2TB_C15

TDB models of NI2TB_C15 (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI2TB_C15, type code %, sha256 796cc79d9d9131a6…

68: PHASE NI2TB_C15 % 2 2 1 !
69: CONST NI2TB_C15 : NI : TB : !

NiTb-23Ye.tdb: NI2TB_C15, type code %, sha256 c5d76ba67dadc803…

64: PHASE NI2TB_C15 % 2 2 1 !
65: CONST NI2TB_C15 : NI : TB : !

NiTb-24Rah.tdb: NI2TB_C15, type code %, sha256 cd81bfc018e84565…

65: PHASE NI2TB_C15 % 2 2 1 !
66: CONST NI2TB_C15 : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI2TB3 (Ni–Tb)

Id: phase:ni-tb:ni2tb3; status assigned
Structure: Dy3Ni2 · mC20 · C2/m (12); type st:dy3ni2-mc20; 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: Ni 0.4000, Tb 0.6000
Stability: stable in 3 of 3 calculated diagram(s): 300–1101.49 K, x(Tb) 0.6–0.6
Literature: 22 values (22 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:ni2tb3
paper: paper:10.1007/s10853-022-08039-1:Tb3Ni2, paper:10.1007/s11669-024-01089-9:Tb3Ni2, paper:10.1016/s0925-8388(03)00667-4:Ni2Tb3
tdb: tdb:NiTb-04Ron.tdb:NI2TB3, tdb:NiTb-23Ye.tdb:NI2TB3, tdb:NiTb-24Rah.tdb:NI2TB3

TDB models of NI2TB3 (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI2TB3, type code %, sha256 796cc79d9d9131a6…

78: PHASE NI2TB3 % 2 2 3 !
79: CONST NI2TB3 : NI : TB : !

NiTb-23Ye.tdb: NI2TB3, type code %, sha256 c5d76ba67dadc803…

74: PHASE NI2TB3 % 2 2 3 !
75: CONST NI2TB3 : NI : TB : !

NiTb-24Rah.tdb: NI2TB3, type code %, sha256 cd81bfc018e84565…

75: PHASE NI2TB3 % 2 2 3 !
76: CONST NI2TB3 : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI3TB (Ni–Tb)

Id: phase:ni-tb:ni3tb; 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: Ni 0.7500, Tb 0.2500
Stability: stable in 3 of 3 calculated diagram(s): 300–1503.58 K, x(Tb) 0.25–0.25
Literature: 22 values (22 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:ni3tb
paper: paper:10.1007/s10853-022-08039-1:TbNi3, paper:10.1007/s11669-024-01089-9:TbNi3, paper:10.1016/s0925-8388(03)00667-4:Ni3Tb
tdb: tdb:NiTb-04Ron.tdb:NI3TB, tdb:NiTb-23Ye.tdb:NI3TB, tdb:NiTb-24Rah.tdb:NI3TB

TDB models of NI3TB (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI3TB, type code %, sha256 796cc79d9d9131a6…

63: PHASE NI3TB % 2 3 1 !
64: CONST NI3TB : NI : TB : !

NiTb-23Ye.tdb: NI3TB, type code %, sha256 c5d76ba67dadc803…

59: PHASE NI3TB % 2 3 1 !
60: CONST NI3TB : NI : TB : !

NiTb-24Rah.tdb: NI3TB, type code %, sha256 cd81bfc018e84565…

60: PHASE NI3TB % 2 3 1 !
61: CONST NI3TB : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI5TB_D2D (Ni–Tb)

Id: phase:ni-tb:ni5tb-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-aaaabtoy and oqmd-17834, space group 191
Stoichiometry: Ni 0.8333, Tb 0.1667
Stability: stable in 3 of 3 calculated diagram(s): 300–1663.06 K, x(Tb) 0.16667–0.16667
Literature: 30 values (30 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:ni-tb:ni5tb-d2d
mp: mp:mp-aaaabtoy
oqmd: oqmd:oqmd-17834
paper: paper:10.1007/s10853-022-08039-1:TbNi5, paper:10.1007/s11669-024-01089-9:TbNi5, paper:10.1016/s0925-8388(03)00667-4:Ni5Tb
tdb: tdb:NiTb-04Ron.tdb:NI5TB_D2D, tdb:NiTb-23Ye.tdb:NI5TB_D2D, tdb:NiTb-24Rah.tdb:NI5TB_D2D

TDB models of NI5TB_D2D (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI5TB_D2D, type code %, sha256 796cc79d9d9131a6…

53: PHASE NI5TB_D2D % 2 5 1 !
54: CONST NI5TB_D2D : NI : TB : !

NiTb-23Ye.tdb: NI5TB_D2D, type code %, sha256 c5d76ba67dadc803…

49: PHASE NI5TB_D2D % 2 5 1 !
50: CONST NI5TB_D2D : NI : TB : !

NiTb-24Rah.tdb: NI5TB_D2D, type code %, sha256 cd81bfc018e84565…

50: PHASE NI5TB_D2D % 2 5 1 !
51: CONST NI5TB_D2D : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NI7TB2 (Ni–Tb)

Id: phase:ni-tb:ni7tb2; status needs_review
No structure assigned. Why: no_structure_token; sgte_mmc2_row_disagrees_with_dft; sgte_mmc2_rows_disagree
Candidate (dft_mp): R-3m (166) — on-hull MP Tb2Ni7 at x(TB)=0.2222
Candidate (dft_oqmd): R-3m (166) — on-hull OQMD Ni7 Tb2 at x(TB)=0.2222
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 NI7TB2: Ni7Tb2, see also Co7Gd2
Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for NI7TB2: Ni7Tb2, see also Ce2Ni7
Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-04Ron.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-23Ye.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-24Rah.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
Stoichiometry: Ni 0.7778, Tb 0.2222
Stability: stable in 3 of 3 calculated diagram(s): 300–1565.13 K, x(Tb) 0.22222–0.22222
Literature: 21 values (21 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:ni7tb2
paper: paper:10.1007/s10853-022-08039-1:Tb2Ni7, paper:10.1007/s11669-024-01089-9:Tb2Ni7, paper:10.1016/s0925-8388(03)00667-4:Ni7Tb2
tdb: tdb:NiTb-04Ron.tdb:NI7TB2, tdb:NiTb-23Ye.tdb:NI7TB2, tdb:NiTb-24Rah.tdb:NI7TB2

TDB models of NI7TB2 (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NI7TB2, type code %, sha256 796cc79d9d9131a6…

58: PHASE NI7TB2 % 2 7 2 !
59: CONST NI7TB2 : NI : TB : !

NiTb-23Ye.tdb: NI7TB2, type code %, sha256 c5d76ba67dadc803…

54: PHASE NI7TB2 % 2 7 2 !
55: CONST NI7TB2 : NI : TB : !

NiTb-24Rah.tdb: NI7TB2, type code %, sha256 cd81bfc018e84565…

55: PHASE NI7TB2 % 2 7 2 !
56: CONST NI7TB2 : NI : TB : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi: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

NITB (Ni–Tb)

Id: phase:ni-tb:nitb; status assigned
Structure: NiTb · mP24 · P2_1/m (11); type st:nitb-mp24; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ni 0.5000, Tb 0.5000
Stability: stable in 3 of 3 calculated diagram(s): 300–1266.03 K, x(Tb) 0.5–0.5
Literature: 32 values (32 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:nitb
paper: paper:10.1007/s10853-022-08039-1:TbNi, paper:10.1007/s11669-024-01089-9:TbNi, paper:10.1016/s0925-8388(03)00667-4:NiTb
tdb: tdb:NiTb-04Ron.tdb:NITB, tdb:NiTb-23Ye.tdb:NITB, tdb:NiTb-24Rah.tdb:NITB

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

NiTb-04Ron.tdb: NITB, type code %, sha256 796cc79d9d9131a6…

73: PHASE NITB % 2 1 1 !
74: CONST NITB : NI : TB : !

NiTb-23Ye.tdb: NITB, type code %, sha256 c5d76ba67dadc803…

69: PHASE NITB % 2 1 1 !
70: CONST NITB : NI : TB : !

NiTb-24Rah.tdb: NITB, type code %, sha256 cd81bfc018e84565…

70: PHASE NITB % 2 1 1 !
71: CONST NITB : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase

NITB3_D011 (Ni–Tb)

Id: phase:ni-tb:nitb3-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Stoichiometry: Ni 0.2500, Tb 0.7500
Stability: stable in 3 of 3 calculated diagram(s): 300–1061.5 K, x(Tb) 0.75–0.75
Literature: 22 values (22 accepted) from 3 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ni-tb:nitb3-d011
paper: paper:10.1007/s10853-022-08039-1:Tb3Ni, paper:10.1007/s11669-024-01089-9:Tb3Ni, paper:10.1016/s0925-8388(03)00667-4:NiTb3
tdb: tdb:NiTb-04Ron.tdb:NITB3_D011, tdb:NiTb-23Ye.tdb:NITB3_D011, tdb:NiTb-24Rah.tdb:NITB3_D011

TDB models of NITB3_D011 (3): PHASE and CONSTITUENT statements as written

NiTb-04Ron.tdb: NITB3_D011, type code %, sha256 796cc79d9d9131a6…

83: PHASE NITB3_D011 % 2 1 3 !
84: CONST NITB3_D011 : NI : TB : !

NiTb-23Ye.tdb: NITB3_D011, type code %, sha256 c5d76ba67dadc803…

79: PHASE NITB3_D011 % 2 1 3 !
80: CONST NITB3_D011 : NI : TB : !

NiTb-24Rah.tdb: NITB3_D011, type code %, sha256 cd81bfc018e84565…

80: PHASE NITB3_D011 % 2 1 3 !
81: CONST NITB3_D011 : NI : TB : !

Example references (3 of 3; assessments first):

doi: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:10.1007/s11669-024-01089-9 Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(03)00667-4 Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).
assessment that models this phase; cited as the source of values for this phase; 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}
}