# Au–Ho phases > Au–Ho system: 13 phases (tier A 9, tier C 3, liquid 1); 12 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/AU-HO.html · Markdown: https://data.orchid-project.org/phases/pages/AU-HO.md 13 phases (tier A 9, tier C 3, liquid 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](https://orchid-project.org/phases/?q=AU-HO) · [full JSON](https://data.orchid-project.org/phases/systems/AU-HO.json) · [Au–Ho system page](https://data.orchid-project.org/systems/AU-HO.html) · [Markdown](https://data.orchid-project.org/phases/pages/AU-HO.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Au–Ho system (13) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AU10HO7](#phase-au-ho-au10ho7); _phase:au-ho:au10ho7_ | Au10Gd7 · tI136 · I4_1/acd (142) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1621.8 K, x(Ho) 0.41176–0.41176 | 7 | 1 | | [AU2HO_C11B](#phase-au-ho-au2ho-c11b); _phase:au-ho:au2ho-c11b_ | MoSi2 · C11_b · tI6 · I4/mmm (139) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1609.09 K, x(Ho) 0.33333–0.33333 | 6 | 1 | | [AU3HO_D0A](#phase-au-ho-au3ho-d0a); _phase:au-ho:au3ho-d0a_ | beta-Cu3Ti · D0_a · oP8 · Pmmn (59) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1519.31 K, x(Ho) 0.25–0.25 | 6 | 1 | | [AU4HO_D1A](#phase-au-ho-au4ho-d1a); _phase:au-ho:au4ho-d1a_ | MoNi4 · D1_a · tI10 · I4/m (87) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1223.25 K, x(Ho) 0.2–0.2 | 4 | 1 | | [AU51HO14](#phase-au-ho-au51ho14); _phase:au-ho:au51ho14_ | Ag51Gd14 · hP68 · P6/m (175) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1333.26 K, x(Ho) 0.21538–0.21538 | 7 | 1 | | [AU6HO](#phase-au-ho-au6ho); _phase:au-ho:au6ho_ | Au6Sm · tP56 · P4_2/ncm (138) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1119.28 K, x(Ho) 0.14286–0.14286 | 8 | 1 | | [AUHO_B2](#phase-au-ho-auho-b2); _phase:au-ho:auho-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1885.78–1973.28 K, x(Ho) 0.5–0.5 | 4 | 1 | | [AUHO_B33](#phase-au-ho-auho-b33); _phase:au-ho:auho-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1885.78 K, x(Ho) 0.5–0.5 | 4 | 1 | | [AUHO2_C37](#phase-au-ho-auho2-c37); _phase:au-ho:auho2-c37_ | Co2Si · C37 · oP12 · Pnma (62) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1375.3 K, x(Ho) 0.66667–0.66667 | 3 | 1 | | [BCC_A2](#phase-au-ho-bcc-a2); _phase:au-ho:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 | | [FCC_A1](#phase-au-ho-fcc-a1); _phase:au-ho:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1820.55 K, x(Ho) 0–0.05485 | 2 | 1 | | [HCP_A3](#phase-au-ho-hcp-a3); _phase:au-ho:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2499.48 K, x(Ho) 0.99197–1 | 2 | 1 | | [LIQUID](#phase-au-ho-liquid); _phase:au-ho:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 1075.55–2500 K, x(Ho) 0–1 | 24 | 1 | ## AU10HO7 (Au–Ho) - Id: `phase:au-ho:au10ho7`; status `assigned` - Structure: Au10Gd7 · tI136 · I4_1/acd (142); type `st:au10gd7-ti136`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Au 0.5882, Ho 0.4118 - Stability: stable in 1 of 1 calculated diagram(s): 300–1621.8 K, x(Ho) 0.41176–0.41176 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au10ho7) Names (3): _corpus: _corpus:phase:au-ho:au10ho7 _paper: _paper:10.1016/j.calphad.2012.02.002:Au10Ho7 _tdb: _tdb:AuHo-12Don.tdb:AU10HO7 ### TDB models of AU10HO7 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU10HO7, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 77: PHASE AU10HO7 % 2 10 7 ! 78: CONST AU10HO7 : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AU2HO_C11B (Au–Ho) - Id: `phase:au-ho:au2ho-c11b`; status `assigned` - Structure: MoSi2 · C11_b · tI6 · I4/mmm (139); type `st:c11-b-mosi2-ti6`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.6667, Ho 0.3333 - Stability: stable in 1 of 1 calculated diagram(s): 300–1609.09 K, x(Ho) 0.33333–0.33333 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au2ho-c11b) Names (3): _corpus: _corpus:phase:au-ho:au2ho-c11b _paper: _paper:10.1016/j.calphad.2012.02.002:Au2Ho _tdb: _tdb:AuHo-12Don.tdb:AU2HO_C11B ### TDB models of AU2HO_C11B (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU2HO_C11B, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 72: PHASE AU2HO_C11B % 2 2 1 ! 73: CONST AU2HO_C11B : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AU3HO_D0A (Au–Ho) - Id: `phase:au-ho:au3ho-d0a`; status `assigned` - Structure: beta-Cu3Ti · D0_a · oP8 · Pmmn (59); type `st:d0-a-beta-cu3ti-op8`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaabsys and oqmd-10739, space group 59 - Stoichiometry: Au 0.7500, Ho 0.2500 - Stability: stable in 1 of 1 calculated diagram(s): 300–1519.31 K, x(Ho) 0.25–0.25 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au3ho-d0a) Names (5): _corpus: _corpus:phase:au-ho:au3ho-d0a _mp: _mp:mp-aaaabsys _oqmd: _oqmd:oqmd-10739 _paper: _paper:10.1016/j.calphad.2012.02.002:Au3Ho _tdb: _tdb:AuHo-12Don.tdb:AU3HO_D0A ### TDB models of AU3HO_D0A (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU3HO_D0A, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 67: PHASE AU3HO_D0A % 2 3 1 ! 68: CONST AU3HO_D0A : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AU4HO_D1A (Au–Ho) - Id: `phase:au-ho:au4ho-d1a`; status `assigned` - Structure: MoNi4 · D1_a · tI10 · I4/m (87); type `st:d1-a-moni4-ti10`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaabsyt and oqmd-10740, space group 87 - Stoichiometry: Au 0.8000, Ho 0.2000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1223.25 K, x(Ho) 0.2–0.2 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au4ho-d1a) Names (5): _corpus: _corpus:phase:au-ho:au4ho-d1a _mp: _mp:mp-aaaabsyt _oqmd: _oqmd:oqmd-10740 _paper: _paper:10.1016/j.calphad.2012.02.002:Au4Ho _tdb: _tdb:AuHo-12Don.tdb:AU4HO_D1A ### TDB models of AU4HO_D1A (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU4HO_D1A, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 57: PHASE AU4HO_D1A % 2 4 1 ! 58: CONST AU4HO_D1A : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AU51HO14 (Au–Ho) - Id: `phase:au-ho:au51ho14`; status `assigned` - Structure: Ag51Gd14 · hP68 · P6/m (175); type `st:ag51gd14-hp68`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Au 0.7846, Ho 0.2154 - Stability: stable in 1 of 1 calculated diagram(s): 300–1333.26 K, x(Ho) 0.21538–0.21538 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au51ho14) Names (3): _corpus: _corpus:phase:au-ho:au51ho14 _paper: _paper:10.1016/j.calphad.2012.02.002:Au51Ho14 _tdb: _tdb:AuHo-12Don.tdb:AU51HO14 ### TDB models of AU51HO14 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU51HO14, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 62: PHASE AU51HO14 % 2 51 14 ! 63: CONST AU51HO14 : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AU6HO (Au–Ho) - Id: `phase:au-ho:au6ho`; status `assigned` - Structure: Au6Sm · tP56 · P4_2/ncm (138); type `st:au6sm-tp56`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Au 0.8571, Ho 0.1429 - Stability: stable in 1 of 1 calculated diagram(s): 300–1119.28 K, x(Ho) 0.14286–0.14286 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:au6ho) Names (3): _corpus: _corpus:phase:au-ho:au6ho _paper: _paper:10.1016/j.calphad.2012.02.002:Au6Ho _tdb: _tdb:AuHo-12Don.tdb:AU6HO ### TDB models of AU6HO (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AU6HO, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 52: PHASE AU6HO % 2 6 1 ! 53: CONST AU6HO : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AUHO_B2 (Au–Ho) - Id: `phase:au-ho:auho-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.5000, Ho 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 1885.78–1973.28 K, x(Ho) 0.5–0.5 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:auho-b2) Names (3): _corpus: _corpus:phase:au-ho:auho-b2 _paper: _paper:10.1016/j.calphad.2012.02.002:beta AuHo _tdb: _tdb:AuHo-12Don.tdb:AUHO_B2 ### TDB models of AUHO_B2 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AUHO_B2, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 87: PHASE AUHO_B2 % 2 1 1 ! 88: CONST AUHO_B2 : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AUHO_B33 (Au–Ho) - Id: `phase:au-ho:auho-b33`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.5000, Ho 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1885.78 K, x(Ho) 0.5–0.5 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:auho-b33) Names (3): _corpus: _corpus:phase:au-ho:auho-b33 _paper: _paper:10.1016/j.calphad.2012.02.002:alpha AuHo _tdb: _tdb:AuHo-12Don.tdb:AUHO_B33 ### TDB models of AUHO_B33 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AUHO_B33, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 82: PHASE AUHO_B33 % 2 1 1 ! 83: CONST AUHO_B33 : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## AUHO2_C37 (Au–Ho) - Id: `phase:au-ho:auho2-c37`; status `assigned` - Structure: Co2Si · C37 · oP12 · Pnma (62); type `st:c37-co2si-op12`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaabsyr and oqmd-10737, space group 62 - Stoichiometry: Au 0.3333, Ho 0.6667 - Stability: stable in 1 of 1 calculated diagram(s): 300–1375.3 K, x(Ho) 0.66667–0.66667 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:auho2-c37) Names (5): _corpus: _corpus:phase:au-ho:auho2-c37 _mp: _mp:mp-aaaabsyr _oqmd: _oqmd:oqmd-10737 _paper: _paper:10.1016/j.calphad.2012.02.002:AuHo2 _tdb: _tdb:AuHo-12Don.tdb:AUHO2_C37 ### TDB models of AUHO2_C37 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): AUHO2_C37, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 92: PHASE AUHO2_C37 % 2 1 2 ! 93: CONST AUHO2_C37 : AU : HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## BCC_A2 (Au–Ho) - Id: `phase:au-ho: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 1 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:bcc-a2) Names (2): _corpus: _corpus:phase:au-ho:bcc-a2 _tdb: _tdb:AuHo-12Don.tdb:BCC_A2 ### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): BCC_A2, type code %B, sha256 `6ea84ad1f6ea5862…` ~~~~text 42: PHASE BCC_A2 %B 2 1 3 ! 43: CONST BCC_A2 : AU HO : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase_ ## FCC_A1 (Au–Ho) - Id: `phase:au-ho: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 1 of 1 calculated diagram(s): 300–1820.55 K, x(Ho) 0–0.05485 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:fcc-a1) Names (3): _corpus: _corpus:phase:au-ho:fcc-a1 _paper: _paper:10.1016/j.calphad.2012.02.002:Au(fcc) _tdb: _tdb:AuHo-12Don.tdb:FCC_A1 ### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): FCC_A1, type code %A, sha256 `6ea84ad1f6ea5862…` ~~~~text 37: PHASE FCC_A1 %A 2 1 1 ! 38: CONST FCC_A1 : AU% HO : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## HCP_A3 (Au–Ho) - Id: `phase:au-ho: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 1 of 1 calculated diagram(s): 300–2499.48 K, x(Ho) 0.99197–1 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:hcp-a3) Names (3): _corpus: _corpus:phase:au-ho:hcp-a3 _paper: _paper:10.1016/j.calphad.2012.02.002:Ho (hcp) _tdb: _tdb:AuHo-12Don.tdb:HCP_A3 ### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): HCP_A3, type code %A, sha256 `6ea84ad1f6ea5862…` ~~~~text 47: PHASE HCP_A3 %A 2 1 0.5 ! 48: CONST HCP_A3 : AU HO% : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _cited as the source of values for this phase_ ## LIQUID (Au–Ho) - Id: `phase:au-ho:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1075.55–2500 K, x(Ho) 0–1 - Literature: 24 values (24 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-ho:liquid) Names (3): _corpus: _corpus:phase:au-ho:liquid _paper: _paper:10.1016/j.calphad.2012.02.002:L _tdb: _tdb:AuHo-12Don.tdb:LIQUID ### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written [AuHo-12Don.tdb](https://orchid-project.org/data/databases/sgte-binary/AuHo-12Don.tdb): LIQUID, type code %, sha256 `6ea84ad1f6ea5862…` ~~~~text 32: PHASE LIQUID:L % 1 1 ! 33: CONST LIQUID:L : AU HO : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2012.02.002](https://doi.org/10.1016/j.calphad.2012.02.002) H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/s0966-9795(02)00093-6](https://doi.org/10.1016/s0966-9795%2802%2900093-6) A. Saccone, D. Macciò, S. Delfino, R. Ferro, Alloying behavior of the rare earth metals with gold: the Ho–Au, Er–Au and Tm–Au systems, Intermetallics 10, 903-913 (2002). _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). https://doi.org/10.5281/zenodo.23735970 - R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065 Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes. ```bibtex @misc{orchid_phase_registry_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Registry: phase registry of binary systems}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735970}, url = {https://doi.org/10.5281/zenodo.23735970}, note = {Version 1, machine-extracted} } @misc{orchid_data_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID data: umbrella record of the ORCHID datasets}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23736065}, url = {https://doi.org/10.5281/zenodo.23736065}, note = {Version 1, machine-extracted} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).