Au–Bi phases

6 phases (tier A 5, liquid 1); 4 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 · Au–Bi system page · Markdown · field reference

Phases of the Au–Bi system (6)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
RHOMBOHEDRAL_A7 phase:au-bi:a7-rhombohedral	alpha-As · A7 · hR2 · R-3m (166)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–544.55 K, x(Bi) 0.99641–1	23	3
AU2BI_C15 phase:au-bi:au2bi-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 349.81–651.15 K, x(Bi) 0.33333–0.33333	39	3
BCC_A2 phase:au-bi:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	3
FCC_A1 phase:au-bi:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1372.33 K, x(Bi) 0–0.00068	24	3
HCP_A3 phase:au-bi:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	3
LIQUID phase:au-bi:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 512.86–2500 K, x(Bi) 0–1	33	3

RHOMBOHEDRAL_A7 (Au–Bi)

Id: phase:au-bi:a7-rhombohedral; status assigned
Structure: alpha-As · A7 · hR2 · R-3m (166); type st:a7-alpha-as-hr2; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–544.55 K, x(Bi) 0.99641–1
Literature: 23 values (23 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:au-bi:a7-rhombohedral, corpus:phase:au-bi:rhombohedral-a7
paper: paper:10.1016/0040-6031(88)87046-1:Bi(rho), paper:10.1016/j.calphad.2006.07.002:(Bi)
tdb: tdb:AuBi-06Ser.tdb:RHOMBOHEDRAL_A7, tdb:AuBi-07Wan.tdb:RHOMBOHEDRAL_A7, tdb:AuBi-88Che-LB.tdb:RHOMBOHEDRAL_A7

TDB models of RHOMBOHEDRAL_A7 (3): PHASE and CONSTITUENT statements as written

AuBi-06Ser.tdb: RHOMBOHEDRAL_A7, type code %, sha256 211df8efcc0e7604…

43: PHASE RHOMBOHEDRAL_A7 % 1 1 !
44: CONST RHOMBOHEDRAL_A7 : BI : !

AuBi-07Wan.tdb: RHOMBOHEDRAL_A7, type code %, sha256 2708fcbef3e06ed3…

41: PHASE RHOMBOHEDRAL_A7 % 1 1 !
42: CONST RHOMBOHEDRAL_A7 : AU BI% : !

AuBi-88Che-LB.tdb: RHOMBOHEDRAL_A7, type code %, sha256 7247b351d3e4203e…

46: PHASE RHOMBOHEDRAL_A7 % 1 1 !
47: CONST RHOMBOHEDRAL_A7 : BI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1002/zaac.19060500116 Rudolf Vogel, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XXXIII. Über die Legierungen des Goldes mit Wismut und Antimon, Z. Anorg. Chem. 50, 145-157 (1906).
cited as the source of values for this phase
doi:10.1007/bf02868093 H. Okamoto and T.B. Massalski, Bull. Alloy Phase Diagrams 4, 401 (1983).
cited as the source of values for this phase
doi:10.1016/0040-6031(81)80143-8 Peter C. Wallbrecht, Roger Blachnik, Kennth C. Mills, The heat capacity and enthalpy of some Hume—Rothery phases formed by copper, silver and gold. Part I. Cu + Sb, Ag + Sb, Au + Sb, Au + Bi systems, Thermochimica Acta 45, 189-198 (1981).
cited as the source of values for this phase

AU2BI_C15 (Au–Bi)

Id: phase:au-bi:au2bi-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-aaabgljl and oqmd-646874, space group 227
Stoichiometry: Au 0.6667, Bi 0.3333
Stability: stable in 3 of 3 calculated diagram(s): 349.81–651.15 K, x(Bi) 0.33333–0.33333
Literature: 39 values (39 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:au-bi:au2bi-c15
mp: mp:mp-aaabgljl
oqmd: oqmd:oqmd-646874
paper: paper:10.1016/0040-6031(88)87046-1:Au2Bi, paper:10.1016/j.calphad.2006.07.002:Au2Bi
tdb: tdb:AuBi-06Ser.tdb:AU2BI_C15, tdb:AuBi-07Wan.tdb:AU2BI_C15, tdb:AuBi-88Che-LB.tdb:AU2BI_C15

TDB models of AU2BI_C15 (3): PHASE and CONSTITUENT statements as written

AuBi-06Ser.tdb: AU2BI_C15, type code %, sha256 211df8efcc0e7604…

48: PHASE AU2BI_C15 % 2 2 1 !
49: CONST AU2BI_C15 : AU : BI : !

AuBi-07Wan.tdb: AU2BI_C15, type code %, sha256 2708fcbef3e06ed3…

46: PHASE AU2BI_C15 % 2 2 1 !
47: CONST AU2BI_C15 : AU : BI : !

AuBi-88Che-LB.tdb: AU2BI_C15, type code %, sha256 7247b351d3e4203e…

51: PHASE AU2BI_C15 % 2 2 1 !
52: CONST AU2BI_C15 : AU : BI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1002/zaac.19060500116 Rudolf Vogel, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XXXIII. Über die Legierungen des Goldes mit Wismut und Antimon, Z. Anorg. Chem. 50, 145-157 (1906).
cited as the source of values for this phase
doi:10.1007/bf02868093 H. Okamoto and T.B. Massalski, Bull. Alloy Phase Diagrams 4, 401 (1983).
cited as the source of values for this phase
doi:10.1016/0040-6031(81)80143-8 Peter C. Wallbrecht, Roger Blachnik, Kennth C. Mills, The heat capacity and enthalpy of some Hume—Rothery phases formed by copper, silver and gold. Part I. Cu + Sb, Ag + Sb, Au + Sb, Au + Bi systems, Thermochimica Acta 45, 189-198 (1981).
cited as the source of values for this phase

BCC_A2 (Au–Bi)

Id: phase:au-bi:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: not stable in 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:au-bi:bcc-a2
tdb: tdb:AuBi-06Ser.tdb:BCC_A2, tdb:AuBi-07Wan.tdb:BCC_A2, tdb:AuBi-88Che-LB.tdb:BCC_A2

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

AuBi-06Ser.tdb: BCC_A2, type code %B, sha256 211df8efcc0e7604…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : AU BI : VA : !

AuBi-07Wan.tdb: BCC_A2, type code %B, sha256 2708fcbef3e06ed3…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : AU BI : VA : !

AuBi-88Che-LB.tdb: BCC_A2, type code %B, sha256 7247b351d3e4203e…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : AU BI : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase
doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase

FCC_A1 (Au–Bi)

Id: phase:au-bi: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): 300–1372.33 K, x(Bi) 0–0.00068
Literature: 24 values (24 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:au-bi:fcc-a1
paper: paper:10.1016/0040-6031(88)87046-1:fcc, paper:10.1016/j.calphad.2006.07.002:Fcc, paper:10.1016/j.calphad.2006.07.002:fcc
tdb: tdb:AuBi-06Ser.tdb:FCC_A1, tdb:AuBi-07Wan.tdb:FCC_A1, tdb:AuBi-88Che-LB.tdb:FCC_A1

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

AuBi-06Ser.tdb: FCC_A1, type code %A, sha256 211df8efcc0e7604…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : AU% BI : VA : !

AuBi-07Wan.tdb: FCC_A1, type code %A, sha256 2708fcbef3e06ed3…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : AU% BI : VA : !

AuBi-88Che-LB.tdb: FCC_A1, type code %A, sha256 7247b351d3e4203e…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : AU% BI : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1007/bf02868093 H. Okamoto and T.B. Massalski, Bull. Alloy Phase Diagrams 4, 401 (1983).
cited as the source of values for this phase
doi:10.1016/0040-6031(81)80143-8 Peter C. Wallbrecht, Roger Blachnik, Kennth C. Mills, The heat capacity and enthalpy of some Hume—Rothery phases formed by copper, silver and gold. Part I. Cu + Sb, Ag + Sb, Au + Sb, Au + Bi systems, Thermochimica Acta 45, 189-198 (1981).
cited as the source of values for this phase

HCP_A3 (Au–Bi)

Id: phase:au-bi: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 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:au-bi:hcp-a3
tdb: tdb:AuBi-06Ser.tdb:HCP_A3, tdb:AuBi-07Wan.tdb:HCP_A3, tdb:AuBi-88Che-LB.tdb:HCP_A3

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

AuBi-06Ser.tdb: HCP_A3, type code %A, sha256 211df8efcc0e7604…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : AU BI : VA : !

AuBi-07Wan.tdb: HCP_A3, type code %A, sha256 2708fcbef3e06ed3…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : AU BI : VA : !

AuBi-88Che-LB.tdb: HCP_A3, type code %A, sha256 7247b351d3e4203e…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : AU BI : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase
doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase

LIQUID (Au–Bi)

Id: phase:au-bi:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 512.86–2500 K, x(Bi) 0–1
Literature: 33 values (33 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:au-bi:liquid
paper: paper:10.1016/0040-6031(88)87046-1:Au(liq), paper:10.1016/0040-6031(88)87046-1:L, paper:10.1016/j.calphad.2006.07.002:L
tdb: tdb:AuBi-06Ser.tdb:LIQUID, tdb:AuBi-07Wan.tdb:LIQUID, tdb:AuBi-88Che-LB.tdb:LIQUID

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

AuBi-06Ser.tdb: LIQUID, type code %, sha256 211df8efcc0e7604…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : AU BI : !

AuBi-07Wan.tdb: LIQUID, type code %, sha256 2708fcbef3e06ed3…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : AU BI : !

AuBi-88Che-LB.tdb: LIQUID, type code %, sha256 7247b351d3e4203e…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : AU BI : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2006.07.002 C. Servant, E. Zoro, B. Legendre, Thermodynamic reassessment of the Au–Bi system, Calphad 30, 443-448 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/0040-6031(88)87046-1 P.-Y. Chevalier, Thermodynamic evaluation of the Au-Bi system, Thermochimica Acta 130, 15-24 (1988).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1007/s11664-007-0090-z J. Wang, F.G. Meng, H.S. Liu, L.B. Liu, Z.P. Jin, Thermodynamic Modeling of the Au-Bi-Sb Ternary System, Journal of Elec Materi 36, 568-577 (2007).
assessment that models this phase
doi:10.1002/zaac.19060500116 Rudolf Vogel, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XXXIII. Über die Legierungen des Goldes mit Wismut und Antimon, Z. Anorg. Chem. 50, 145-157 (1906).
cited as the source of values for this phase
doi:10.1016/0040-6031(81)80143-8 Peter C. Wallbrecht, Roger Blachnik, Kennth C. Mills, The heat capacity and enthalpy of some Hume—Rothery phases formed by copper, silver and gold. Part I. Cu + Sb, Ag + Sb, Au + Sb, Au + Bi systems, Thermochimica Acta 45, 189-198 (1981).
cited as the source of values for this phase
doi:10.1007/bf02868093 H. Okamoto and T.B. Massalski, Bull. Alloy Phase Diagrams 4, 401 (1983).
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). 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}
}