Eu–Te phases

6 phases (tier A 3, liquid 1, needs_review 2); 6 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 · Eu–Te system page · Markdown · field reference

Phases of the Eu–Te system (6)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
HEXAGONAL_A8 phase:eu-te:a8-hexagonal	gamma-Se · A8 · hP3 · P3_121 (152)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2499.48 K, x(Te) 1–1	2	2
BCC_A2 phase:eu-te:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1098.31 K, x(Te) 0–0	3	2
EU3TE7 phase:eu-te:eu3te7		needs_review	stable in 2 of 2 calculated diagram(s): 300–703 K, x(Te) 0.7–0.7	4	2
EU4TE7 phase:eu-te:eu4te7		needs_review	stable in 2 of 2 calculated diagram(s): 300–793.01 K, x(Te) 0.63636–0.63636	4	2
EUTE_B1 phase:eu-te:eute-b1	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1799.08 K, x(Te) 0.5–0.57439	8	2
LIQUID phase:eu-te:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 683.23–2500 K, x(Te) 0–1	12	2

HEXAGONAL_A8 (Eu–Te)

Id: phase:eu-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
Stoichiometry: Te 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–2499.48 K, x(Te) 1–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:eu-te:a8-hexagonal, corpus:phase:eu-te:hexagonal-a8
paper: paper:10.1016/j.jallcom.2015.03.224:(Te)
tdb: tdb:EuTe-15Gha.tdb:HEXAGONAL_A8, tdb:EuTe-21Don.tdb:HEXAGONAL_A8

TDB models of HEXAGONAL_A8 (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: HEXAGONAL_A8, type code %, sha256 fe1f8b4811f1b60f…

39: PHASE HEXAGONAL_A8 % 1 1 !
40: CONST HEXAGONAL_A8 : TE : !

EuTe-21Don.tdb: HEXAGONAL_A8, type code %, sha256 fd5d8bba8db3f01f…

31: PHASE HEXAGONAL_A8 % 1 1 !
32: CONST HEXAGONAL_A8 : TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
assessment that models this phase

BCC_A2 (Eu–Te)

Id: phase:eu-te:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stoichiometry: Eu 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–1098.31 K, x(Te) 0–0
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-te:bcc-a2
paper: paper:10.1016/j.jallcom.2015.03.224:(Eu)
tdb: tdb:EuTe-15Gha.tdb:BCC_A2, tdb:EuTe-21Don.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: BCC_A2, type code %B, sha256 fe1f8b4811f1b60f…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : EU : VA : !

EuTe-21Don.tdb: BCC_A2, type code %B, sha256 fd5d8bba8db3f01f…

24: PHASE BCC_A2 %B 2 1 3 !
25: CONST BCC_A2 : EU : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
assessment that models this phase

EU3TE7 (Eu–Te)

Id: phase:eu-te:eu3te7; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Eu3Te7) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Eu3Te7) — Hallstedt 2025 mmc2 row for EU3TE7: Eu3Te7
Stoichiometry: Eu 0.3000, Te 0.7000
Stability: stable in 2 of 2 calculated diagram(s): 300–703 K, x(Te) 0.7–0.7
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-te:eu3te7
paper: paper:10.1016/j.jallcom.2015.03.224:Eu3Te7
tdb: tdb:EuTe-15Gha.tdb:EU3TE7, tdb:EuTe-21Don.tdb:EU3TE7

TDB models of EU3TE7 (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: EU3TE7, type code %, sha256 fe1f8b4811f1b60f…

54: PHASE EU3TE7 % 2 3 7 !
55: CONST EU3TE7 : EU : TE : !

EuTe-21Don.tdb: EU3TE7, type code %, sha256 fd5d8bba8db3f01f…

46: PHASE EU3TE7 % 2 3 7 !
47: CONST EU3TE7 : EU : TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
assessment that models this phase

EU4TE7 (Eu–Te)

Id: phase:eu-te:eu4te7; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Eu4Te7) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Eu4Te7) — Hallstedt 2025 mmc2 row for EU4TE7: Eu4Te7
Stoichiometry: Eu 0.3636, Te 0.6364
Stability: stable in 2 of 2 calculated diagram(s): 300–793.01 K, x(Te) 0.63636–0.63636
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-te:eu4te7
paper: paper:10.1016/j.jallcom.2015.03.224:Eu4Te7
tdb: tdb:EuTe-15Gha.tdb:EU4TE7, tdb:EuTe-21Don.tdb:EU4TE7

TDB models of EU4TE7 (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: EU4TE7, type code %, sha256 fe1f8b4811f1b60f…

49: PHASE EU4TE7 % 2 4 7 !
50: CONST EU4TE7 : EU : TE : !

EuTe-21Don.tdb: EU4TE7, type code %, sha256 fd5d8bba8db3f01f…

41: PHASE EU4TE7 % 2 4 7 !
42: CONST EU4TE7 : EU : TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
assessment that models this phase

EUTE_B1 (Eu–Te)

Id: phase:eu-te:eute-b1; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–1799.08 K, x(Te) 0.5–0.57439
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-te:eute-b1
paper: paper:10.1016/j.jallcom.2015.03.224:(EuTe)
tdb: tdb:EuTe-15Gha.tdb:EUTE_B1, tdb:EuTe-21Don.tdb:EUTE_B1

TDB models of EUTE_B1 (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: EUTE_B1, type code %, sha256 fe1f8b4811f1b60f…

44: PHASE EUTE_B1 % 2 1 1 !
45: CONST EUTE_B1 : EU% TE : TE : !

EuTe-21Don.tdb: EUTE_B1, type code %, sha256 fd5d8bba8db3f01f…

36: PHASE EUTE_B1 % 2 1 1 !
37: CONST EUTE_B1 : EU VA : TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
assessment that models this phase

LIQUID (Eu–Te)

Id: phase:eu-te:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 683.23–2500 K, x(Te) 0–1
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-te:liquid
paper: paper:10.1016/j.jallcom.2015.03.224:Liq
tdb: tdb:EuTe-15Gha.tdb:LIQUID, tdb:EuTe-21Don.tdb:LIQUID

TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written

EuTe-15Gha.tdb: LIQUID, type code %, sha256 fe1f8b4811f1b60f…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : EU TE : !

EuTe-21Don.tdb: LIQUID, type code %, sha256 fd5d8bba8db3f01f…

19: PHASE LIQUID:L % 1 1 !
20: CONST LIQUID:L : EU TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2015.03.224 H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2021.102281 C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021).
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). 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}
}