# La–Te phases > La–Te system: 9 phases (tier A 6, tier C 1, liquid 1, needs_review 1); 9 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/LA-TE.html · Markdown: https://data.orchid-project.org/phases/pages/LA-TE.md 9 phases (tier A 6, tier C 1, liquid 1, needs_review 1); 9 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=LA-TE) · [full JSON](https://data.orchid-project.org/phases/systems/LA-TE.json) · [La–Te system page](https://data.orchid-project.org/systems/LA-TE.html) · [Markdown](https://data.orchid-project.org/phases/pages/LA-TE.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the La–Te system (9) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [HEXAGONAL_A8](#phase-la-te-a8-hexagonal); _phase:la-te:a8-hexagonal_ | gamma-Se · A8 · hP3 · P3_121 (152) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–722.66 K, x(Te) 1–1 | 0 | 1 | | [BCC_A2](#phase-la-te-bcc-a2); _phase:la-te:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1134–1204.42 K, x(Te) 0–0 | 0 | 1 | | [DHCP](#phase-la-te-dhcp-a3); _phase:la-te:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–550 K, x(Te) 0–0 | 0 | 1 | | [FCC_A1](#phase-la-te-fcc-a1); _phase:la-te:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 550–1134 K, x(Te) 0–0 | 0 | 1 | | [LA3TE4_D73](#phase-la-te-la3te4-d73); _phase:la-te:la3te4-d73_ | Th3P4 · D7_3 · cI28 · I-43d (220) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1812.83 K, x(Te) 0.57143–0.60425 | 0 | 1 | | [LATE_B1](#phase-la-te-late-b1); _phase:la-te:late-b1_ | NaCl · B1 · cF8 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1984.17 K, x(Te) 0.5–0.5 | 0 | 1 | | [LATE2](#phase-la-te-late2); _phase:la-te:late2_ | LaTe2 · mP24 · Pc (7) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1705.33 K, x(Te) 0.62796–0.66658 | 0 | 1 | | [LATE3](#phase-la-te-late3); _phase:la-te:late3_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1087 K, x(Te) 0.75–0.75 | 0 | 1 | | [LIQUID](#phase-la-te-liquid); _phase:la-te:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 722.66–2500 K, x(Te) 0–1 | 0 | 1 | ## HEXAGONAL_A8 (La–Te) - Id: `phase:la-te:a8-hexagonal`; status `assigned` - Structure: gamma-Se · A8 · hP3 · P3_121 (152); type `st:a8-gamma-se-hp3`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–722.66 K, x(Te) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:a8-hexagonal) Names (2): _corpus: _corpus:phase:la-te:a8-hexagonal _tdb: _tdb:LaTe-18Hu.tdb:HEXAGONAL_A8 ### TDB models of HEXAGONAL_A8 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): HEXAGONAL_A8, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 47: PHASE HEXAGONAL_A8 % 1 1 ! 48: CONST HEXAGONAL_A8 : LA TE% : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## BCC_A2 (La–Te) - Id: `phase:la-te: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): 1134–1204.42 K, x(Te) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:bcc-a2) Names (2): _corpus: _corpus:phase:la-te:bcc-a2 _tdb: _tdb:LaTe-18Hu.tdb:BCC_A2 ### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): BCC_A2, type code %B, sha256 `73608a678fbc5bfe…` ~~~~text 35: PHASE BCC_A2 %B 2 1 3 ! 36: CONST BCC_A2 : LA% TE : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## DHCP (La–Te) - Id: `phase:la-te:dhcp-a3`; status `assigned` - Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–550 K, x(Te) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:dhcp-a3) Names (2): _corpus: _corpus:phase:la-te:dhcp-a3 _tdb: _tdb:LaTe-18Hu.tdb:DHCP ### TDB models of DHCP (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): DHCP, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 40: PHASE DHCP % 1 1 ! 41: CONST DHCP : LA% TE : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## FCC_A1 (La–Te) - Id: `phase:la-te: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): 550–1134 K, x(Te) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:fcc-a1) Names (2): _corpus: _corpus:phase:la-te:fcc-a1 _tdb: _tdb:LaTe-18Hu.tdb:FCC_A1 ### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): FCC_A1, type code %A, sha256 `73608a678fbc5bfe…` ~~~~text 30: PHASE FCC_A1 %A 2 1 1 ! 31: CONST FCC_A1 : LA% TE : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## LA3TE4_D73 (La–Te) - Id: `phase:la-te:la3te4-d73`; status `assigned` - Structure: Th3P4 · D7_3 · cI28 · I-43d (220); type `st:d7-3-th3p4-ci28`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1812.83 K, x(Te) 0.57143–0.60425 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:la3te4-d73) Names (2): _corpus: _corpus:phase:la-te:la3te4-d73 _tdb: _tdb:LaTe-18Hu.tdb:LA3TE4_D73 ### TDB models of LA3TE4_D73 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): LA3TE4_D73, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 57: PHASE LA3TE4_D73 % 2 3 4 ! 58: CONST LA3TE4_D73 : LA% VA : TE : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## LATE_B1 (La–Te) - Id: `phase:la-te:late-b1`; status `assigned` - Structure: NaCl · B1 · cF8 · Fm-3m (225); type `st:b1-nacl-cf8`; tier A: standard phase name; confidence high - Stoichiometry: La 0.5000, Te 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1984.17 K, x(Te) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:late-b1) Names (2): _corpus: _corpus:phase:la-te:late-b1 _tdb: _tdb:LaTe-18Hu.tdb:LATE_B1 ### TDB models of LATE_B1 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): LATE_B1, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 52: PHASE LATE_B1 % 2 1 1 ! 53: CONST LATE_B1 : LA : TE : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## LATE2 (La–Te) - Id: `phase:la-te:late2`; status `assigned` - Structure: LaTe2 · mP24 · Pc (7); type `st:late2-mp24`; 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_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 1 of 1 calculated diagram(s): 300–1705.33 K, x(Te) 0.62796–0.66658 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:late2) Names (2): _corpus: _corpus:phase:la-te:late2 _tdb: _tdb:LaTe-18Hu.tdb:LATE2 ### TDB models of LATE2 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): LATE2, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 62: PHASE LATE2 % 3 1 1 1 ! 63: CONST LATE2 : LA : TE : TE% VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## LATE3 (La–Te) - Id: `phase:la-te:late3`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:sgte_mmc2_row_disagrees_with_dft; dft_space_group_63_matches_6_structure_types; no_structure_token; sgte_mmc2_row_disagrees_with_dft - Candidate (dft_mp): Cmcm (63) — on-hull MP LaTe3 at x(TE)=0.7500 - Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD La1 Te3 at x(TE)=0.7500 - Candidate (dft_space_group_and_stoichiometry): (AgCa3) · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): Cd3Er · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): CeZn3 · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): DyGe3 · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): Re3B · E1_a · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Candidate (dft_space_group_and_stoichiometry): NdTe3 · oC16 · Cmcm (63) — space group 63 and stoichiometry match - Stoichiometry: La 0.2500, Te 0.7500 - Stability: stable in 1 of 1 calculated diagram(s): 300–1087 K, x(Te) 0.75–0.75 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:late3) Names (2): _corpus: _corpus:phase:la-te:late3 _tdb: _tdb:LaTe-18Hu.tdb:LATE3 ### TDB models of LATE3 (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): LATE3, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 67: PHASE LATE3 % 2 1 3 ! 68: CONST LATE3 : LA : TE : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _assessment that models this phase_ ## LIQUID (La–Te) - Id: `phase:la-te:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 722.66–2500 K, x(Te) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:la-te:liquid) Names (2): _corpus: _corpus:phase:la-te:liquid _tdb: _tdb:LaTe-18Hu.tdb:LIQUID ### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written [LaTe-18Hu.tdb](https://orchid-project.org/data/databases/sgte-binary/LaTe-18Hu.tdb): LIQUID, type code %, sha256 `73608a678fbc5bfe…` ~~~~text 25: PHASE LIQUID:L % 1 1 ! 26: CONST LIQUID:L : LA LATE TE : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2018.03.003](https://doi.org/10.1016/j.calphad.2018.03.003) Y.-J. Hu, J. Paz Solden Palma, Y. Wang, S.A. Firdosy, K.E. Star, J.-P. Fleurial, V.A. Ravi, Z.-K. Liu, Calphad, 61, 227-36(2018). _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).