# Ga–Sr phases > Ga–Sr system: 8 phases (tier A 6, tier B 1, liquid 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/GA-SR.html · Markdown: https://data.orchid-project.org/phases/pages/GA-SR.md 8 phases (tier A 6, tier B 1, liquid 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=GA-SR) · [full JSON](https://data.orchid-project.org/phases/systems/GA-SR.json) · [Ga–Sr system page](https://data.orchid-project.org/systems/GA-SR.html) · [Markdown](https://data.orchid-project.org/phases/pages/GA-SR.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Ga–Sr system (8) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [ORTHORHOMBIC_A11](#phase-ga-sr-a11-orthorhombic); _phase:ga-sr:a11-orthorhombic_ | alpha-Ga · A11 · oC8 · Cmce (64) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–302.91 K, x(Sr) 0–0 | 0 | 1 | | [BCC_A2](#phase-ga-sr-bcc-a2); _phase:ga-sr:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 820–2500 K, x(Sr) 0.99999–1 | 0 | 1 | | [FCC_A1](#phase-ga-sr-fcc-a1); _phase:ga-sr:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–820 K, x(Sr) 0.99999–1 | 0 | 1 | | [GA2SR_C32](#phase-ga-sr-ga2sr-c32); _phase:ga-sr:ga2sr-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1321.45 K, x(Sr) 0.33333–0.33333 | 0 | 1 | | [GA4SR_D13](#phase-ga-sr-ga4sr-d13); _phase:ga-sr:ga4sr-d13_ | Al4Ba · D1_3 · tI10 · I4/mmm (139) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1046.07 K, x(Sr) 0.2–0.2 | 0 | 1 | | [GA7SR8](#phase-ga-sr-ga7sr8); _phase:ga-sr:ga7sr8_ | Ba8Ga7 · cP60 · P2_13 (198) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–987.95 K, x(Sr) 0.53333–0.53333 | 3 | 1 | | [HCP_A3](#phase-ga-sr-hcp-a3); _phase:ga-sr:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 | | [LIQUID](#phase-ga-sr-liquid); _phase:ga-sr:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Sr) 0–1 | 0 | 1 | ## ORTHORHOMBIC_A11 (Ga–Sr) - Id: `phase:ga-sr:a11-orthorhombic`; status `assigned` - Structure: alpha-Ga · A11 · oC8 · Cmce (64); type `st:a11-alpha-ga-oc8`; tier A: standard phase name; confidence high - Stoichiometry: Ga 1.0000 - Stability: stable in 1 of 1 calculated diagram(s): 300–302.91 K, x(Sr) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:a11-orthorhombic) Names (2): _corpus: _corpus:phase:ga-sr:a11-orthorhombic _tdb: _tdb:GaSr-13Li.tdb:ORTHORHOMBIC_A11 ### TDB models of ORTHORHOMBIC_A11 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): ORTHORHOMBIC_A11, type code %, sha256 `0f666746a5ac092e…` ~~~~text 41: PHASE ORTHORHOMBIC_A11 % 1 1 ! 42: CONST ORTHORHOMBIC_A11 : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## BCC_A2 (Ga–Sr) - Id: `phase:ga-sr: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 1 of 1 calculated diagram(s): 820–2500 K, x(Sr) 0.99999–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:bcc-a2) Names (2): _corpus: _corpus:phase:ga-sr:bcc-a2 _tdb: _tdb:GaSr-13Li.tdb:BCC_A2 ### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): BCC_A2, type code %B, sha256 `0f666746a5ac092e…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : GA SR% : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## FCC_A1 (Ga–Sr) - Id: `phase:ga-sr: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): 300–820 K, x(Sr) 0.99999–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:fcc-a1) Names (2): _corpus: _corpus:phase:ga-sr:fcc-a1 _tdb: _tdb:GaSr-13Li.tdb:FCC_A1 ### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): FCC_A1, type code %A, sha256 `0f666746a5ac092e…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : GA SR : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## GA2SR_C32 (Ga–Sr) - Id: `phase:ga-sr:ga2sr-c32`; status `assigned` - Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaaaha and oqmd-89633, space group 191 - Stoichiometry: Ga 0.6667, Sr 0.3333 - Stability: stable in 1 of 1 calculated diagram(s): 300–1321.45 K, x(Sr) 0.33333–0.33333 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:ga2sr-c32) Names (4): _corpus: _corpus:phase:ga-sr:ga2sr-c32 _mp: _mp:mp-aaaaaaha _oqmd: _oqmd:oqmd-89633 _tdb: _tdb:GaSr-13Li.tdb:GA2SR_C32 ### TDB models of GA2SR_C32 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): GA2SR_C32, type code %, sha256 `0f666746a5ac092e…` ~~~~text 51: PHASE GA2SR_C32 % 2 2 1 ! 52: CONST GA2SR_C32 : GA : SR : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## GA4SR_D13 (Ga–Sr) - Id: `phase:ga-sr:ga4sr-d13`; status `assigned` - Structure: Al4Ba · D1_3 · tI10 · I4/mmm (139); type `st:d1-3-al4ba-ti10`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaacsh and oqmd-30351, space group 139 - Stoichiometry: Ga 0.8000, Sr 0.2000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1046.07 K, x(Sr) 0.2–0.2 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:ga4sr-d13) Names (4): _corpus: _corpus:phase:ga-sr:ga4sr-d13 _mp: _mp:mp-aaaaacsh _oqmd: _oqmd:oqmd-30351 _tdb: _tdb:GaSr-13Li.tdb:GA4SR_D13 ### TDB models of GA4SR_D13 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): GA4SR_D13, type code %, sha256 `0f666746a5ac092e…` ~~~~text 46: PHASE GA4SR_D13 % 2 4 1 ! 47: CONST GA4SR_D13 : GA : SR : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## GA7SR8 (Ga–Sr) - Id: `phase:ga-sr:ga7sr8`; status `assigned` - Structure: Ba8Ga7 · cP60 · P2_13 (198); type `st:ba8ga7-cp60`; tier B: DFT-supported (unique MP + OQMD match); confidence high - Stoichiometry: Ga 0.4667, Sr 0.5333 - Stability: stable in 1 of 1 calculated diagram(s): 300–987.95 K, x(Sr) 0.53333–0.53333 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:ga7sr8) Names (5): _corpus: _corpus:phase:ga-sr:ga7sr8 _mp: _mp:mp-aaaabtjn _oqmd: _oqmd:oqmd-89636 _paper: _paper:10.1016/j.calphad.2013.09.002:Ga7Sr8 _tdb: _tdb:GaSr-13Li.tdb:GA7SR8 ### TDB models of GA7SR8 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): GA7SR8, type code %, sha256 `0f666746a5ac092e…` ~~~~text 56: PHASE GA7SR8 % 2 7 8 ! 57: CONST GA7SR8 : GA : SR : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase; reports values for this phase_ ## HCP_A3 (Ga–Sr) - Id: `phase:ga-sr: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 1 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:hcp-a3) Names (2): _corpus: _corpus:phase:ga-sr:hcp-a3 _tdb: _tdb:GaSr-13Li.tdb:HCP_A3 ### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): HCP_A3, type code %A, sha256 `0f666746a5ac092e…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : GA SR : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _assessment that models this phase_ ## LIQUID (Ga–Sr) - Id: `phase:ga-sr:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Sr) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-sr:liquid) Names (2): _corpus: _corpus:phase:ga-sr:liquid _tdb: _tdb:GaSr-13Li.tdb:LIQUID ### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written [GaSr-13Li.tdb](https://orchid-project.org/data/databases/sgte-binary/GaSr-13Li.tdb): LIQUID, type code %, sha256 `0f666746a5ac092e…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : GA SR : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2013.09.002](https://doi.org/10.1016/j.calphad.2013.09.002) Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). _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). 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).