# Bi–Er phases > Bi–Er system: 9 phases (tier A 5, tier C 2, liquid 1, needs_review 1); 7 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/BI-ER.html · Markdown: https://data.orchid-project.org/phases/pages/BI-ER.md 9 phases (tier A 5, tier C 2, liquid 1, needs_review 1); 7 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=BI-ER) · [full JSON](https://data.orchid-project.org/phases/systems/BI-ER.json) · [Bi–Er system page](https://data.orchid-project.org/systems/BI-ER.html) · [Markdown](https://data.orchid-project.org/phases/pages/BI-ER.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Bi–Er system (9) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [RHOMBOHEDRAL_A7](#phase-bi-er-a7-rhombohedral); _phase:bi-er: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(Er) 0–0 | 5 | 3 | | [BCC_A2](#phase-bi-er-bcc-a2); _phase:bi-er:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [BI2ER](#phase-bi-er-bi2er); _phase:bi-er:bi2er_ | NdAs2 · mP12 · P2_1/c (14) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–861.11 K, x(Er) 0.33333–0.33333 | 4 | 1 | | [BI3ER5](#phase-bi-er-bi3er5); _phase:bi-er:bi3er5_ | Bi3Y5 · oP32 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1700.9 K, x(Er) 0.625–0.625 | 28 | 3 | | [BIER_HT](#phase-bi-er-bier); _phase:bi-er:bier_ | | needs_review | stable in 1 of 1 calculated diagram(s): 2048.04–2133.04 K, x(Er) 0.5–0.5 | 0 | 1 | | [BIER_B1](#phase-bi-er-bier-b1); _phase:bi-er:bier-b1_ | NaCl · B1 · cF8 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2080.12 K, x(Er) 0.5–0.5 | 11 | 3 | | [FCC_A1](#phase-bi-er-fcc-a1); _phase:bi-er:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [HCP_A3](#phase-bi-er-hcp-a3); _phase:bi-er:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2499.79 K, x(Er) 0.98613–1 | 9 | 3 | | [LIQUID](#phase-bi-er-liquid); _phase:bi-er:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 541–2500 K, x(Er) 0–1 | 34 | 3 | ## RHOMBOHEDRAL_A7 (Bi–Er) - Id: `phase:bi-er: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 - Stoichiometry: Bi 1.0000 - Stability: stable in 3 of 3 calculated diagram(s): 300–544.55 K, x(Er) 0–0 - Literature: 5 values (5 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:a7-rhombohedral) Names (8): _corpus: _corpus:phase:bi-er:a7-rhombohedral, corpus:phase:bi-er:rhombohedral-a7 _paper: _paper:10.1007/s11669-022-00947-8:(Bi), paper:10.1016/j.jnucmat.2017.08.016:rhombohedral (Bi), paper:10.1016/j.tca.2013.05.024:Rhomb_A7 (Bi) _tdb: _tdb:BiEr-13Wan.tdb:RHOMBOHEDRAL_A7, tdb:BiEr-17Wan.tdb:RHOMBOHEDRAL_A7, tdb:BiEr-22Ben.tdb:RHOMBOHEDRAL_A7 ### TDB models of RHOMBOHEDRAL_A7 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `1fa218775bc6a20f…` ~~~~text 41: PHASE RHOMBOHEDRAL_A7 % 1 1 ! 42: CONST RHOMBOHEDRAL_A7 : BI : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `dfdba02348cf0f12…` ~~~~text 41: PHASE RHOMBOHEDRAL_A7 % 1 1 ! 42: CONST RHOMBOHEDRAL_A7 : BI : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `f4719f37425c3c71…` ~~~~text 47: PHASE RHOMBOHEDRAL_A7 % 1 1 ! 48: CONST RHOMBOHEDRAL_A7 : BI : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (2002). _cited as the source of values for this phase_ ## BCC_A2 (Bi–Er) - Id: `phase:bi-er: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](https://orchid-project.org/phases/#phase:bi-er:bcc-a2) Names (4): _corpus: _corpus:phase:bi-er:bcc-a2 _tdb: _tdb:BiEr-13Wan.tdb:BCC_A2, tdb:BiEr-17Wan.tdb:BCC_A2, tdb:BiEr-22Ben.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): BCC_A2, type code %B, sha256 `1fa218775bc6a20f…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : BI ER : VA : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): BCC_A2, type code %B, sha256 `dfdba02348cf0f12…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : BI ER : VA : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): BCC_A2, type code %B, sha256 `f4719f37425c3c71…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : BI ER : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase_ - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase_ ## BI2ER (Bi–Er) - Id: `phase:bi-er:bi2er`; status `assigned` - Structure: NdAs2 · mP12 · P2_1/c (14); type `st:ndas2-mp12`; 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: Bi 0.6667, Er 0.3333 - Stability: stable in 1 of 1 calculated diagram(s): 300–861.11 K, x(Er) 0.33333–0.33333 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:bi2er) Names (3): _corpus: _corpus:phase:bi-er:bi2er _paper: _paper:10.1007/s11669-022-00947-8:ErBi2 _tdb: _tdb:BiEr-22Ben.tdb:BI2ER ### TDB models of BI2ER (1): PHASE and CONSTITUENT statements as written [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): BI2ER, type code %, sha256 `f4719f37425c3c71…` ~~~~text 52: PHASE BI2ER % 2 2 1 ! 53: CONST BI2ER : BI : ER : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (2002). _cited as the source of values for this phase_ ## BI3ER5 (Bi–Er) - Id: `phase:bi-er:bi3er5`; status `assigned` - Structure: Bi3Y5 · oP32 · Pnma (62); type `st:bi3y5-op32`; 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 (dft_space_group_62_matches_3_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Bi 0.3750, Er 0.6250 - Stability: stable in 3 of 3 calculated diagram(s): 300–1700.9 K, x(Er) 0.625–0.625 - Literature: 28 values (28 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:bi3er5) Names (7): _corpus: _corpus:phase:bi-er:bi3er5 _paper: _paper:10.1007/s11669-022-00947-8:Er5Bi3, paper:10.1016/j.jnucmat.2017.08.016:Er5Bi3, paper:10.1016/j.tca.2013.05.024:Bi3Er5 _tdb: _tdb:BiEr-13Wan.tdb:BI3ER5, tdb:BiEr-17Wan.tdb:BI3ER5, tdb:BiEr-22Ben.tdb:BI3ER5 ### TDB models of BI3ER5 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): BI3ER5, type code %, sha256 `1fa218775bc6a20f…` ~~~~text 51: PHASE BI3ER5 % 2 3 5 ! 52: CONST BI3ER5 : BI : ER : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): BI3ER5, type code %, sha256 `dfdba02348cf0f12…` ~~~~text 51: PHASE BI3ER5 % 2 3 5 ! 52: CONST BI3ER5 : BI : ER : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): BI3ER5, type code %, sha256 `f4719f37425c3c71…` ~~~~text 67: PHASE BI3ER5 % 2 3 5 ! 68: CONST BI3ER5 : BI : ER : ! ~~~~ Example references (6 of 6; assessments first): - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/s0925-8388(01)01009-x](https://doi.org/10.1016/s0925-8388%2801%2901009-x) M Drzyzga, J Szade, Structure and magnetism of R5Bi3 (R=Tb, Dy, Ho, Er) and Tb4Bi3, Journal of Alloys and Compounds 321, 27-34 (2001). _cited as the source of values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (2002). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(84)90320-5](https://doi.org/10.1016/0022-5088%2884%2990320-5) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Enthalpies of formation of liquid and solid binary alloys of lead, antimony and bismuth with rare earth elements, Journal of the Less Common Metals 102, 239-249 (1984). _cited as the source of values for this phase_ ## BIER_HT (Bi–Er) - Id: `phase:bi-er:bier`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete - Candidate (dft_mp): Fm-3m (225) — on-hull MP ErBi at x(ER)=0.5000 - Candidate (dft_oqmd): P-3m1 (164) — on-hull OQMD Bi1 Er1 at x(ER)=0.5000 - Candidate (sgte_mmc2): (BiEr) — Hallstedt 2025 mmc2 row for BIER_HT: BiEr - Stoichiometry: Bi 0.5000, Er 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 2048.04–2133.04 K, x(Er) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:bier) Names (3): _corpus: _corpus:phase:bi-er:bier, corpus:phase:bi-er:bier-ht _tdb: _tdb:BiEr-22Ben.tdb:BIER_HT ### TDB models of BIER_HT (1): PHASE and CONSTITUENT statements as written [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): BIER_HT, type code %, sha256 `f4719f37425c3c71…` ~~~~text 62: PHASE BIER_HT % 2 1 1 ! 63: CONST BIER_HT : BI : ER : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase_ ## BIER_B1 (Bi–Er) - Id: `phase:bi-er:bier-b1`; status `assigned` - Structure: NaCl · B1 · cF8 · Fm-3m (225); type `st:b1-nacl-cf8`; tier A: standard phase name; confidence high - Stoichiometry: Bi 0.5000, Er 0.5000 - Stability: stable in 3 of 3 calculated diagram(s): 300–2080.12 K, x(Er) 0.5–0.5 - Literature: 11 values (11 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:bier-b1) Names (7): _corpus: _corpus:phase:bi-er:bier-b1 _paper: _paper:10.1007/s11669-022-00947-8:α-ErBi, paper:10.1016/j.jnucmat.2017.08.016:ErBi, paper:10.1016/j.tca.2013.05.024:BiEr _tdb: _tdb:BiEr-13Wan.tdb:BIER_B1, tdb:BiEr-17Wan.tdb:BIER_B1, tdb:BiEr-22Ben.tdb:BIER_B1 ### TDB models of BIER_B1 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): BIER_B1, type code %, sha256 `1fa218775bc6a20f…` ~~~~text 46: PHASE BIER_B1 % 2 1 1 ! 47: CONST BIER_B1 : BI : ER : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): BIER_B1, type code %, sha256 `dfdba02348cf0f12…` ~~~~text 46: PHASE BIER_B1 % 2 1 1 ! 47: CONST BIER_B1 : BI : ER : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): BIER_B1, type code %, sha256 `f4719f37425c3c71…` ~~~~text 57: PHASE BIER_B1 % 2 1 1 ! 58: CONST BIER_B1 : BI : ER : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (2002). _cited as the source of values for this phase_ ## FCC_A1 (Bi–Er) - Id: `phase:bi-er:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; 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](https://orchid-project.org/phases/#phase:bi-er:fcc-a1) Names (4): _corpus: _corpus:phase:bi-er:fcc-a1 _tdb: _tdb:BiEr-13Wan.tdb:FCC_A1, tdb:BiEr-17Wan.tdb:FCC_A1, tdb:BiEr-22Ben.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): FCC_A1, type code %A, sha256 `1fa218775bc6a20f…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : BI ER : VA : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): FCC_A1, type code %A, sha256 `dfdba02348cf0f12…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : BI ER : VA : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): FCC_A1, type code %A, sha256 `f4719f37425c3c71…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : BI ER : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase_ - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase_ ## HCP_A3 (Bi–Er) - Id: `phase:bi-er: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): 300–2499.79 K, x(Er) 0.98613–1 - Literature: 9 values (9 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:hcp-a3) Names (7): _corpus: _corpus:phase:bi-er:hcp-a3 _paper: _paper:10.1007/s11669-022-00947-8:(Er), paper:10.1016/j.jnucmat.2017.08.016:HCP_A3 (Er), paper:10.1016/j.tca.2013.05.024:Hcp_A3 (Er) _tdb: _tdb:BiEr-13Wan.tdb:HCP_A3, tdb:BiEr-17Wan.tdb:HCP_A3, tdb:BiEr-22Ben.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): HCP_A3, type code %A, sha256 `1fa218775bc6a20f…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : BI ER% : VA: ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): HCP_A3, type code %A, sha256 `dfdba02348cf0f12…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : BI ER% : VA: ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): HCP_A3, type code %A, sha256 `f4719f37425c3c71…` ~~~~text 42: PHASE HCP_A3 %A 2 1 0.5 ! 43: CONST HCP_A3 : BI ER% : VA: ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (2002). _cited as the source of values for this phase_ ## LIQUID (Bi–Er) - Id: `phase:bi-er:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 541–2500 K, x(Er) 0–1 - Literature: 34 values (34 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:bi-er:liquid) Names (8): _corpus: _corpus:phase:bi-er:liquid _paper: _paper:10.1007/s11669-022-00947-8:L, paper:10.1007/s11669-022-00947-8:liquid, paper:10.1016/j.jnucmat.2017.08.016:L, paper:10.1016/j.tca.2013.05.024:L _tdb: _tdb:BiEr-13Wan.tdb:LIQUID, tdb:BiEr-17Wan.tdb:LIQUID, tdb:BiEr-22Ben.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [BiEr-13Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb): LIQUID, type code %, sha256 `1fa218775bc6a20f…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : BI ER : ! ~~~~ [BiEr-17Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb): LIQUID, type code %, sha256 `dfdba02348cf0f12…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : BI ER : ! ~~~~ [BiEr-22Ben.tdb](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb): LIQUID, type code %, sha256 `f4719f37425c3c71…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : BI BIER ER : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1515/zna-2002-9-1016](https://doi.org/10.1515/zna-2002-9-1016) M. N. Abdusalyamova, O. I. Rachmatov, The Investigation of Phase Diagrams of Erbium Pnictides, Zeitschrift für Naturforschung A 57, 98-100 (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).