Mn–Ni phases

13 phases (tier A 7, tier C 1, liquid 1, needs_review 3, unresolved_no_candidates 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 · Mn–Ni system page · Markdown · field reference

Phases of the Mn–Ni system (13)
Phase	Structure	Basis	Stability (calculated)	TDB models
BCC_A2 phase:mn-ni:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 7 calculated diagram(s): 1411.01–1519 K, x(Ni) 0–0.06714	13
B2_BCC phase:mn-ni:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 947.96–1521.43 K, x(Ni) 0–0.49831	6
CBCC_A12 phase:mn-ni:cbcc-a12	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–1085.82 K, x(Ni) 0–0.23426	7
CUB_A13 phase:mn-ni:cub-a13	beta-Mn · A13 · cP20 · P4_132 (213)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 685.88–1429.99 K, x(Ni) 0–0.21291	7
FCC_4SL phase:mn-ni:fcc-4sl		needs_review	stable in 3 of 3 calculated diagram(s): 300–2499.93 K, x(Ni) 0–1	3
FCC_A1 phase:mn-ni:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–2499.93 K, x(Ni) 0–1	13
L12_FCC phase:mn-ni:fcc-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2035.92 K, x(Ni) 0.01–1	3
HCP_A3 phase:mn-ni:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 7 calculated diagram(s)	7
L10_SOLO phase:mn-ni:l10-solo	AuCu · L1_0 · tP4 · P4/mmm (123)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1350 K, x(Ni) 0.4685–0.57704	3
LIQUID phase:mn-ni:liquid	liquid	liquid	stable in 7 of 7 calculated diagram(s): 1291.02–2500 K, x(Ni) 0–1	7
MN2NI phase:mn-ni:mn2ni		unresolved_no_candidates	stable in 1 of 1 calculated diagram(s): 450.86–921.93 K, x(Ni) 0.33333–0.33333	1
MNNI phase:mn-ni:mnni		needs_review	stable in 1 of 1 calculated diagram(s): 300–1146.51 K, x(Ni) 0.5–0.5	1
MNNI2 phase:mn-ni:mnni2		needs_review	stable in 4 of 4 calculated diagram(s): 300–966.36 K, x(Ni) 0.66667–0.69	4

BCC_A2 (Mn–Ni)

Id: phase:mn-ni:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 5 of 7 calculated diagram(s): 1411.01–1519 K, x(Ni) 0–0.06714
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:mn-ni:bcc-a2
tdb: tdb:MnNi-01Mie.tdb:BCC_A2, tdb:MnNi-07Fra-2SL.tdb:A2_BCC, tdb:MnNi-07Fra-2SL.tdb:BCC_A2, tdb:MnNi-07Fra-no-wildcards.tdb:A2_BCC, tdb:MnNi-07Fra-no-wildcards.tdb:BCC_A2, tdb:MnNi-07Fra.tdb:A2_BCC, tdb:MnNi-07Fra.tdb:BCC_A2, tdb:MnNi-08Liu.tdb:A2_BCC, tdb:MnNi-08Liu.tdb:BCC_A2, tdb:MnNi-19Wal-4sl.tdb:A2_BCC, tdb:MnNi-19Wal-4sl.tdb:BCC_A2, tdb:MnNi-19Wal.tdb:A2_BCC, tdb:MnNi-19Wal.tdb:BCC_A2

TDB models of BCC_A2 (13): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: BCC_A2, type code %B, sha256 e2b0b529a311eb05…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : MN% NI : VA : !

MnNi-07Fra-2SL.tdb: A2_BCC, type code %B, sha256 0484cb934a365f17…

62: PHASE A2_BCC %B 2 1 3 !
63: CONST A2_BCC : MN NI : VA : !

MnNi-07Fra-2SL.tdb: BCC_A2, type code %B, sha256 0484cb934a365f17…

57: PHASE BCC_A2 %B 2 1 3 !
58: CONST BCC_A2 : MN% NI : VA : !

MnNi-07Fra-no-wildcards.tdb: A2_BCC, type code %B, sha256 d0981ad5d93e9872…

57: PHASE A2_BCC %B 2 1 3 !
58: CONST A2_BCC : MN NI VA : VA : !

MnNi-07Fra-no-wildcards.tdb: BCC_A2, type code %B, sha256 d0981ad5d93e9872…

52: PHASE BCC_A2 %B 2 1 3 !
53: CONST BCC_A2 : MN% NI : VA : !

MnNi-07Fra.tdb: A2_BCC, type code %B, sha256 558d698d326d88c8…

58: PHASE A2_BCC %B 2 1 3 !
59: CONST A2_BCC : MN NI VA : VA : !

MnNi-07Fra.tdb: BCC_A2, type code %B, sha256 558d698d326d88c8…

53: PHASE BCC_A2 %B 2 1 3 !
54: CONST BCC_A2 : MN% NI : VA : !

MnNi-08Liu.tdb: A2_BCC, type code %B, sha256 7bcf108656ae69db…

72: PHASE A2_BCC %B 2 1 3 !
73: CONST A2_BCC : MN NI VA : VA : !

MnNi-08Liu.tdb: BCC_A2, type code %B, sha256 7bcf108656ae69db…

67: PHASE BCC_A2 %B 2 1 3 !
68: CONST BCC_A2 : MN% NI : VA : !

MnNi-19Wal-4sl.tdb: A2_BCC, type code %B, sha256 6d03ce76bc9ea5d6…

65: PHASE A2_BCC %B 2 1 3 !
66: CONST A2_BCC : MN NI VA : VA : !

MnNi-19Wal-4sl.tdb: BCC_A2, type code %B, sha256 6d03ce76bc9ea5d6…

60: PHASE BCC_A2 %B 2 1 3 !
61: CONST BCC_A2 : MN% NI : VA : !

MnNi-19Wal.tdb: A2_BCC, type code %B, sha256 a1c3320a40c90e99…

74: PHASE A2_BCC %B 2 1 3 !
75: CONST A2_BCC : MN NI VA : VA : !

MnNi-19Wal.tdb: BCC_A2, type code %B, sha256 a1c3320a40c90e99…

69: PHASE BCC_A2 %B 2 1 3 !
70: CONST BCC_A2 : MN% NI : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

B2_BCC (Mn–Ni)

Id: phase:mn-ni:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: MnNi-07Fra-2SL.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: MnNi-07Fra-no-wildcards.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: MnNi-07Fra.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: MnNi-08Liu.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: MnNi-19Wal-4sl.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: MnNi-19Wal.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in MnNi-07Fra-2SL.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-07Fra-no-wildcards.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-07Fra.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-08Liu.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-19Wal-4sl.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-19Wal.tdb also describes the disordered state
Stability: stable in 6 of 6 calculated diagram(s): 947.96–1521.43 K, x(Ni) 0–0.49831
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:mn-ni:bcc-b2
tdb: tdb:MnNi-07Fra-2SL.tdb:B2_BCC, tdb:MnNi-07Fra-no-wildcards.tdb:B2_BCC, tdb:MnNi-07Fra.tdb:B2_BCC, tdb:MnNi-08Liu.tdb:B2_BCC, tdb:MnNi-19Wal-4sl.tdb:B2_BCC, tdb:MnNi-19Wal.tdb:B2_BCC

TDB models of B2_BCC (6): PHASE and CONSTITUENT statements as written

MnNi-07Fra-2SL.tdb: B2_BCC, type code %BO, sha256 0484cb934a365f17…

67: PHASE B2_BCC %BO 3 0.5 0.5 3 !
68: CONST B2_BCC : MN% NI : MN NI% : VA : !

MnNi-07Fra-no-wildcards.tdb: B2_BCC, type code %BO, sha256 d0981ad5d93e9872…

62: PHASE B2_BCC %BO 3 0.5 0.5 3 !
63: CONST B2_BCC : MN% NI VA : MN NI% VA : VA : !

MnNi-07Fra.tdb: B2_BCC, type code %BO, sha256 558d698d326d88c8…

63: PHASE B2_BCC %BO 3 0.5 0.5 3 !
64: CONST B2_BCC : MN% NI VA : MN NI% VA : VA : !

MnNi-08Liu.tdb: B2_BCC, type code %BO, sha256 7bcf108656ae69db…

77: PHASE B2_BCC %BO 3 0.5 0.5 3 !
78: CONST B2_BCC : MN% NI VA : MN NI% VA : VA : !

MnNi-19Wal-4sl.tdb: B2_BCC, type code %BO, sha256 6d03ce76bc9ea5d6…

70: PHASE B2_BCC %BO 3 0.5 0.5 3 !
71: CONST B2_BCC : MN% NI VA : MN NI% VA : VA : !

MnNi-19Wal.tdb: B2_BCC, type code %BO, sha256 a1c3320a40c90e99…

79: PHASE B2_BCC %BO 3 0.5 0.5 3 !
80: CONST B2_BCC : MN% NI VA : MN NI% VA : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

CBCC_A12 (Mn–Ni)

Id: phase:mn-ni:cbcc-a12; status assigned
Structure: alpha-Mn · A12 · cI58 · I-43m (217); type st:a12-alpha-mn-ci58; tier A: standard phase name; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 300–1085.82 K, x(Ni) 0–0.23426
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:mn-ni:cbcc-a12
tdb: tdb:MnNi-01Mie.tdb:CBCC_A12, tdb:MnNi-07Fra-2SL.tdb:CBCC_A12, tdb:MnNi-07Fra-no-wildcards.tdb:CBCC_A12, tdb:MnNi-07Fra.tdb:CBCC_A12, tdb:MnNi-08Liu.tdb:CBCC_A12, tdb:MnNi-19Wal-4sl.tdb:CBCC_A12, tdb:MnNi-19Wal.tdb:CBCC_A12

TDB models of CBCC_A12 (7): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: CBCC_A12, type code %A, sha256 e2b0b529a311eb05…

43: PHASE CBCC_A12 %A 2 1 1 !
44: CONST CBCC_A12 : MN% NI : VA : !

MnNi-07Fra-2SL.tdb: CBCC_A12, type code %, sha256 0484cb934a365f17…

77: PHASE CBCC_A12 % 2 1 1 !
78: CONST CBCC_A12 : MN% NI : VA : !

MnNi-07Fra-no-wildcards.tdb: CBCC_A12, type code %A, sha256 d0981ad5d93e9872…

72: PHASE CBCC_A12 %A 2 1 1 !
73: CONST CBCC_A12 : MN% NI : VA : !

MnNi-07Fra.tdb: CBCC_A12, type code %A, sha256 558d698d326d88c8…

73: PHASE CBCC_A12 %A 2 1 1 !
74: CONST CBCC_A12 : MN% NI : VA : !

MnNi-08Liu.tdb: CBCC_A12, type code %, sha256 7bcf108656ae69db…

87: PHASE CBCC_A12 % 2 1 1 !
88: CONST CBCC_A12 : MN% NI : VA : !

MnNi-19Wal-4sl.tdb: CBCC_A12, type code %, sha256 6d03ce76bc9ea5d6…

80: PHASE CBCC_A12 % 2 1 1 !
81: CONST CBCC_A12 : MN% NI : VA : !

MnNi-19Wal.tdb: CBCC_A12, type code %, sha256 a1c3320a40c90e99…

89: PHASE CBCC_A12 % 2 1 1 !
90: CONST CBCC_A12 : MN% NI : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

CUB_A13 (Mn–Ni)

Id: phase:mn-ni:cub-a13; status assigned
Structure: beta-Mn · A13 · cP20 · P4_132 (213); type st:a13-beta-mn-cp20; tier A: standard phase name; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 685.88–1429.99 K, x(Ni) 0–0.21291
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:mn-ni:cub-a13
tdb: tdb:MnNi-01Mie.tdb:CUB_A13, tdb:MnNi-07Fra-2SL.tdb:CUB_A13, tdb:MnNi-07Fra-no-wildcards.tdb:CUB_A13, tdb:MnNi-07Fra.tdb:CUB_A13, tdb:MnNi-08Liu.tdb:CUB_A13, tdb:MnNi-19Wal-4sl.tdb:CUB_A13, tdb:MnNi-19Wal.tdb:CUB_A13

TDB models of CUB_A13 (7): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: CUB_A13, type code %, sha256 e2b0b529a311eb05…

48: PHASE CUB_A13 % 2 1 1 !
49: CONST CUB_A13 : MN% NI : VA : !

MnNi-07Fra-2SL.tdb: CUB_A13, type code %, sha256 0484cb934a365f17…

82: PHASE CUB_A13 % 2 1 1 !
83: CONST CUB_A13 : MN% NI : VA : !

MnNi-07Fra-no-wildcards.tdb: CUB_A13, type code %, sha256 d0981ad5d93e9872…

77: PHASE CUB_A13 % 2 1 1 !
78: CONST CUB_A13 : MN% NI : VA : !

MnNi-07Fra.tdb: CUB_A13, type code %, sha256 558d698d326d88c8…

78: PHASE CUB_A13 % 2 1 1 !
79: CONST CUB_A13 : MN% NI : VA : !

MnNi-08Liu.tdb: CUB_A13, type code %, sha256 7bcf108656ae69db…

92: PHASE CUB_A13 % 2 1 1 !
93: CONST CUB_A13 : MN% NI : VA : !

MnNi-19Wal-4sl.tdb: CUB_A13, type code %, sha256 6d03ce76bc9ea5d6…

85: PHASE CUB_A13 % 2 1 1 !
86: CONST CUB_A13 : MN% NI : VA : !

MnNi-19Wal.tdb: CUB_A13, type code %, sha256 a1c3320a40c90e99…

94: PHASE CUB_A13 % 2 1 1 !
95: CONST CUB_A13 : MN% NI : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

FCC_4SL (Mn–Ni)

Id: phase:mn-ni:fcc-4sl; status needs_review
No structure assigned. Why: order_disorder_ambiguity:MnNi-07Fra-no-wildcards.tdb_model_is_partitioned; order_disorder_ambiguity:MnNi-07Fra.tdb_model_is_partitioned; order_disorder_ambiguity:MnNi-19Wal-4sl.tdb_model_is_partitioned; sgte_mmc2_row_disagrees_with_name:FCC_4SL; sgte_mmc2_rows_disagree; unrecognised_name_tokens:4SL
Candidate (dft_mp): Pm-3m (221) — on-hull MP MnNi3 at x(NI)=0.7500
Candidate (dft_oqmd): Pm-3m (221) — on-hull OQMD Mn1 Ni3 at x(NI)=0.7500
Candidate (dft_oqmd): I-43m (217) — on-hull OQMD Mn28 Ni1 at x(NI)=0.0345
Candidate (name_token): Cu · A1 · cF4 · Fm-3m (225) — Strukturbericht/word 'A1' in the TDB name
Candidate (sgte_mmc2): AuCu · L1_0 · tP4 · P4/mmm (123) — Hallstedt 2025 mmc2 row for FCC_4SL: AlTi, AuCu, CoPt, CrPt, FeNi, FePt, MnNi
Candidate (sgte_mmc2): AuCu3 · L1_2 · cP4 · Pm-3m (221) — Hallstedt 2025 mmc2 row for FCC_4SL: Ag3Mg, Al3Li, AlNi3, AlPt3, Au3Cu, AuCu3, Co3Pt, CoPt3, Cr3Pt, CrPt3, Cu3Pt, FeNi3, Fe3Pt, FePt3, MnNi3, Ni3Pt, NiPt3, Ni3Si (beta-1)
Candidate (tdb_comment): AuCu3 · cP4 · Pm-3m, L1_2 — MnNi-07Fra-no-wildcards.tdb: 'Prototype AuCu3 (cP4, Pm-3m, L1_2) and AuCu (tP4, P4/mmm, L1_0)'
Candidate (tdb_comment): AuCu3 · cP4 · Pm-3m, L1_2 — MnNi-07Fra.tdb: 'Prototype AuCu3 (cP4, Pm-3m, L1_2) and AuCu (tP4, P4/mmm, L1_0)'
Stability: stable in 3 of 3 calculated diagram(s): 300–2499.93 K, x(Ni) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mn-ni:fcc-4sl
tdb: tdb:MnNi-07Fra-no-wildcards.tdb:FCC_4SL, tdb:MnNi-07Fra.tdb:FCC_4SL, tdb:MnNi-19Wal-4sl.tdb:FCC_4SL

TDB models of FCC_4SL (3): PHASE and CONSTITUENT statements as written

MnNi-07Fra-no-wildcards.tdb: FCC_4SL, type code %AY, sha256 d0981ad5d93e9872…

47: PHASE FCC_4SL %AY 5 0.25 0.25 0.25 0.25 1 !
48: CONST FCC_4SL : MN NI : MN NI : MN NI : MN NI : VA :  !

MnNi-07Fra.tdb: FCC_4SL, type code %AY, sha256 558d698d326d88c8…

48: PHASE FCC_4SL:F %AY 5 0.25 0.25 0.25 0.25 1 !
49: CONST FCC_4SL:F : MN NI : MN NI : MN NI : MN NI : VA :  !

MnNi-19Wal-4sl.tdb: FCC_4SL, type code %AY, sha256 6d03ce76bc9ea5d6…

55: PHASE FCC_4SL:F %AY 5 0.25 0.25 0.25 0.25 1 !
56: CONST FCC_4SL:F : MN NI : MN NI : MN NI : MN NI : VA :  !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

FCC_A1 (Mn–Ni)

Id: phase:mn-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 7 of 7 calculated diagram(s): 300–2499.93 K, x(Ni) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (14): corpus: corpus:phase:mn-ni:fcc-a1
tdb: tdb:MnNi-01Mie.tdb:FCC_A1, tdb:MnNi-07Fra-2SL.tdb:A1_FCC, tdb:MnNi-07Fra-2SL.tdb:FCC_A1, tdb:MnNi-07Fra-no-wildcards.tdb:A1_FCC, tdb:MnNi-07Fra-no-wildcards.tdb:FCC_A1, tdb:MnNi-07Fra.tdb:A1_FCC, tdb:MnNi-07Fra.tdb:FCC_A1, tdb:MnNi-08Liu.tdb:A1_FCC, tdb:MnNi-08Liu.tdb:FCC_A1, tdb:MnNi-19Wal-4sl.tdb:A1_FCC, tdb:MnNi-19Wal-4sl.tdb:FCC_A1, tdb:MnNi-19Wal.tdb:A1_FCC, tdb:MnNi-19Wal.tdb:FCC_A1

TDB models of FCC_A1 (13): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: FCC_A1, type code %A, sha256 e2b0b529a311eb05…

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

MnNi-07Fra-2SL.tdb: A1_FCC, type code %A, sha256 0484cb934a365f17…

42: PHASE A1_FCC %A 2 1 1 !
43: CONST A1_FCC : MN NI : VA : !

MnNi-07Fra-2SL.tdb: FCC_A1, type code %A, sha256 0484cb934a365f17…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : MN% NI% : VA : !

MnNi-07Fra-no-wildcards.tdb: A1_FCC, type code %A, sha256 d0981ad5d93e9872…

42: PHASE A1_FCC %A 2 1 1 !
43: CONST A1_FCC : MN NI : VA : !

MnNi-07Fra-no-wildcards.tdb: FCC_A1, type code %A, sha256 d0981ad5d93e9872…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : MN% NI% : VA : !

MnNi-07Fra.tdb: A1_FCC, type code %A, sha256 558d698d326d88c8…

43: PHASE A1_FCC %A 2 1 1 !
44: CONST A1_FCC : MN NI : VA : !

MnNi-07Fra.tdb: FCC_A1, type code %A, sha256 558d698d326d88c8…

38: PHASE FCC_A1 %A 2 1 1 !
39: CONST FCC_A1 : MN% NI% : VA : !

MnNi-08Liu.tdb: A1_FCC, type code %A, sha256 7bcf108656ae69db…

52: PHASE A1_FCC %A 2 1 1 !
53: CONST A1_FCC : MN NI : VA : !

MnNi-08Liu.tdb: FCC_A1, type code %A, sha256 7bcf108656ae69db…

47: PHASE FCC_A1 %A 2 1 1 !
48: CONST FCC_A1 : MN% NI% : VA : !

MnNi-19Wal-4sl.tdb: A1_FCC, type code %A, sha256 6d03ce76bc9ea5d6…

50: PHASE A1_FCC %A 2 1 1 !
51: CONST A1_FCC : MN NI : VA : !

MnNi-19Wal-4sl.tdb: FCC_A1, type code %A, sha256 6d03ce76bc9ea5d6…

45: PHASE FCC_A1 %A 2 1 1 !
46: CONST FCC_A1 : MN% NI% : VA : !

MnNi-19Wal.tdb: A1_FCC, type code %A, sha256 a1c3320a40c90e99…

54: PHASE A1_FCC %A 2 1 1 !
55: CONST A1_FCC : MN NI : VA : !

MnNi-19Wal.tdb: FCC_A1, type code %A, sha256 a1c3320a40c90e99…

49: PHASE FCC_A1 %A 2 1 1 !
50: CONST FCC_A1 : MN% NI% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

L12_FCC (Mn–Ni)

Id: phase:mn-ni:fcc-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: MnNi-07Fra-2SL.tdb: ordered phase with disordered part A1_FCC (order/disorder model)
Caveat: MnNi-08Liu.tdb: ordered phase with disordered part A1_FCC (order/disorder model)
Caveat: MnNi-19Wal.tdb: ordered phase with disordered part A1_FCC (order/disorder model)
Caveat: partitioned order/disorder model in MnNi-07Fra-2SL.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-08Liu.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-19Wal.tdb also describes the disordered state
Stability: stable in 3 of 3 calculated diagram(s): 300–2035.92 K, x(Ni) 0.01–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mn-ni:fcc-l12
tdb: tdb:MnNi-07Fra-2SL.tdb:L12_FCC, tdb:MnNi-08Liu.tdb:L12_FCC, tdb:MnNi-19Wal.tdb:L12_FCC

TDB models of L12_FCC (3): PHASE and CONSTITUENT statements as written

MnNi-07Fra-2SL.tdb: L12_FCC, type code %AY, sha256 0484cb934a365f17…

47: PHASE L12_FCC %AY 3 0.75 0.25 1 !
48: CONST L12_FCC : MN NI : MN NI : VA :  !

MnNi-08Liu.tdb: L12_FCC, type code %AY, sha256 7bcf108656ae69db…

57: PHASE L12_FCC %AY 3 0.75 0.25 1 !
58: CONST L12_FCC : MN NI : MN NI : VA :  !

MnNi-19Wal.tdb: L12_FCC, type code %AY, sha256 a1c3320a40c90e99…

59: PHASE L12_FCC %AY 3 0.75 0.25 1 !
60: CONST L12_FCC : MN NI : MN NI : VA :  !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

HCP_A3 (Mn–Ni)

Id: phase:mn-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: not stable in 7 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:mn-ni:hcp-a3
tdb: tdb:MnNi-01Mie.tdb:HCP_A3, tdb:MnNi-07Fra-2SL.tdb:HCP_A3, tdb:MnNi-07Fra-no-wildcards.tdb:HCP_A3, tdb:MnNi-07Fra.tdb:HCP_A3, tdb:MnNi-08Liu.tdb:HCP_A3, tdb:MnNi-19Wal-4sl.tdb:HCP_A3, tdb:MnNi-19Wal.tdb:HCP_A3

TDB models of HCP_A3 (7): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: HCP_A3, type code %A, sha256 e2b0b529a311eb05…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : MN NI : VA : !

MnNi-07Fra-2SL.tdb: HCP_A3, type code %, sha256 0484cb934a365f17…

72: PHASE HCP_A3 % 2 1 0.5 !
73: CONST HCP_A3 : MN NI : VA : !

MnNi-07Fra-no-wildcards.tdb: HCP_A3, type code %A, sha256 d0981ad5d93e9872…

67: PHASE HCP_A3 %A 2 1 0.5 !
68: CONST HCP_A3 : MN NI : VA : !

MnNi-07Fra.tdb: HCP_A3, type code %A, sha256 558d698d326d88c8…

68: PHASE HCP_A3 %A 2 1 0.5 !
69: CONST HCP_A3 : MN NI : VA : !

MnNi-08Liu.tdb: HCP_A3, type code %, sha256 7bcf108656ae69db…

82: PHASE HCP_A3 % 2 1 0.5 !
83: CONST HCP_A3 : MN NI : VA : !

MnNi-19Wal-4sl.tdb: HCP_A3, type code %, sha256 6d03ce76bc9ea5d6…

75: PHASE HCP_A3 % 2 1 0.5 !
76: CONST HCP_A3 : MN NI : VA : !

MnNi-19Wal.tdb: HCP_A3, type code %, sha256 a1c3320a40c90e99…

84: PHASE HCP_A3 % 2 1 0.5 !
85: CONST HCP_A3 : MN NI : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

L10_SOLO (Mn–Ni)

Id: phase:mn-ni:l10-solo; status assigned
Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type st:l1-0-aucu-tp4; 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 (unrecognised_name_tokens:SOLO); structure as stated in the SGTE crystallographic table for this phase name and system
Caveat: partitioned order/disorder model in MnNi-07Fra-2SL.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-08Liu.tdb also describes the disordered state
Caveat: partitioned order/disorder model in MnNi-19Wal.tdb also describes the disordered state
Stability: stable in 3 of 3 calculated diagram(s): 300–1350 K, x(Ni) 0.4685–0.57704
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mn-ni:l10-solo
tdb: tdb:MnNi-07Fra-2SL.tdb:L10_SOLO, tdb:MnNi-08Liu.tdb:L10_SOLO, tdb:MnNi-19Wal.tdb:L10_SOLO

TDB models of L10_SOLO (3): PHASE and CONSTITUENT statements as written

MnNi-07Fra-2SL.tdb: L10_SOLO, type code %A, sha256 0484cb934a365f17…

52: PHASE L10_SOLO %A 2 0.5 0.5 !
53: CONST L10_SOLO : MN NI : MN NI :  !

MnNi-08Liu.tdb: L10_SOLO, type code %A, sha256 7bcf108656ae69db…

62: PHASE L10_SOLO %A 2 0.5 0.5 !
63: CONST L10_SOLO : MN NI : MN NI :  !

MnNi-19Wal.tdb: L10_SOLO, type code %A, sha256 a1c3320a40c90e99…

64: PHASE L10_SOLO %A 2 0.5 0.5 !
65: CONST L10_SOLO : MN NI : MN NI :  !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

LIQUID (Mn–Ni)

Id: phase:mn-ni:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 1291.02–2500 K, x(Ni) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:mn-ni:liquid
tdb: tdb:MnNi-01Mie.tdb:LIQUID, tdb:MnNi-07Fra-2SL.tdb:LIQUID, tdb:MnNi-07Fra-no-wildcards.tdb:LIQUID, tdb:MnNi-07Fra.tdb:LIQUID, tdb:MnNi-08Liu.tdb:LIQUID, tdb:MnNi-19Wal-4sl.tdb:LIQUID, tdb:MnNi-19Wal.tdb:LIQUID

TDB models of LIQUID (7): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: LIQUID, type code %, sha256 e2b0b529a311eb05…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : MN NI : !

MnNi-07Fra-2SL.tdb: LIQUID, type code %, sha256 0484cb934a365f17…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : MN NI : !

MnNi-07Fra-no-wildcards.tdb: LIQUID, type code %, sha256 d0981ad5d93e9872…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : MN NI : !

MnNi-07Fra.tdb: LIQUID, type code %, sha256 558d698d326d88c8…

33: PHASE LIQUID:L % 1 1 !
34: CONST LIQUID:L : MN NI : !

MnNi-08Liu.tdb: LIQUID, type code %, sha256 7bcf108656ae69db…

42: PHASE LIQUID:L % 1 1 !
43: CONST LIQUID:L : MN NI : !

MnNi-19Wal-4sl.tdb: LIQUID, type code %, sha256 6d03ce76bc9ea5d6…

40: PHASE LIQUID:L % 1 1 !
41: CONST LIQUID:L : MN NI : !

MnNi-19Wal.tdb: LIQUID, type code %, sha256 a1c3320a40c90e99…

44: PHASE LIQUID:L % 1 1 !
45: CONST LIQUID:L : MN NI : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase
doi:10.3139/146.101558 P. Franke, Int. J. Mater. Res., 98, 954-60(2007).
assessment that models this phase

MN2NI (Mn–Ni)

Id: phase:mn-ni:mn2ni; status unresolved_no_candidates
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Stoichiometry: Mn 0.6667, Ni 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 450.86–921.93 K, x(Ni) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-ni:mn2ni
tdb: tdb:MnNi-01Mie.tdb:MN2NI

TDB models of MN2NI (1): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: MN2NI, type code %, sha256 e2b0b529a311eb05…

53: PHASE MN2NI % 2 2 1 !
54: CONST MN2NI : MN : NI : !

Example references (1 of 1; assessments first):

doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase

MNNI (Mn–Ni)

Id: phase:mn-ni:mnni; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Candidate (tdb_comment): — MnNi-01Mie.tdb: 'Prototype AuCu and CsCl'
Stoichiometry: Mn 0.5000, Ni 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1146.51 K, x(Ni) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-ni:mnni
tdb: tdb:MnNi-01Mie.tdb:MNNI

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

MnNi-01Mie.tdb: MNNI, type code %, sha256 e2b0b529a311eb05…

58: PHASE MNNI % 2 1 1 !
59: CONST MNNI : MN : NI : !

Example references (1 of 1; assessments first):

doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
assessment that models this phase

MNNI2 (Mn–Ni)

Id: phase:mn-ni:mnni2; status needs_review
No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (MnNi2) — Hallstedt 2025 mmc2 row for MNNI2: MnNi2 (probably does not exist)
Stability: stable in 4 of 4 calculated diagram(s): 300–966.36 K, x(Ni) 0.66667–0.69
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:mn-ni:mnni2
tdb: tdb:MnNi-01Mie.tdb:MNNI2, tdb:MnNi-08Liu.tdb:MNNI2, tdb:MnNi-19Wal-4sl.tdb:MNNI2, tdb:MnNi-19Wal.tdb:MNNI2

TDB models of MNNI2 (4): PHASE and CONSTITUENT statements as written

MnNi-01Mie.tdb: MNNI2, type code %, sha256 e2b0b529a311eb05…

63: PHASE MNNI2 % 2 1 2 !
64: CONST MNNI2 : MN : NI : !

MnNi-08Liu.tdb: MNNI2, type code %, sha256 7bcf108656ae69db…

97: PHASE MNNI2 % 2 1 2 !
98: CONST MNNI2 : MN NI : NI :  !

MnNi-19Wal-4sl.tdb: MNNI2, type code %, sha256 6d03ce76bc9ea5d6…

90: PHASE MNNI2 % 2 1 2 !
91: CONST MNNI2 : MN NI : NI :  !

MnNi-19Wal.tdb: MNNI2, type code %, sha256 a1c3320a40c90e99…

99: PHASE MNNI2 % 2 1 2 !
100: CONST MNNI2 : MN NI : NI :  !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2018.11.003 A. Walnsch, M.J. Kriegel, M. Rudolph, M. Motylenko, O. Fabrichnaya, A. Leineweber, Calphad, 64, 78-89(2019).
assessment that models this phase
doi:10.1016/S0364-5916(01)00029-3 J. Miettinen, Calphad, 25, 43-58(2001).
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). 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}
}