Se–Te phases

3 phases (tier A 1, liquid 1, gas 1); 3 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 · Se–Te system page · Markdown · field reference

Phases of the Se–Te system (3)
Phase	Structure	Basis	Stability (calculated)	TDB models
HEXAGONAL_A8 phase:se-te:a8-hexagonal	gamma-Se · A8 · hP3 · P3_121 (152)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–722.66 K, x(Te) 0–1	3
GAS phase:se-te:gas	gas	gas	stable in 1 of 1 calculated diagram(s): 413.87–2500 K, x(Te) 0–1	1
LIQUID phase:se-te:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 493.97–2500 K, x(Te) 0–1	3

HEXAGONAL_A8 (Se–Te)

Id: phase:se-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 3 of 3 calculated diagram(s): 300–722.66 K, x(Te) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:se-te:a8-hexagonal
tdb: tdb:SeTe-12Gie.tdb:HEXAGONAL_A8, tdb:SeTe-21Fik.tdb:HEXAGONAL_A8, tdb:SeTe-88Gho-LB.tdb:HEXAGONAL_A8

TDB models of HEXAGONAL_A8 (3): PHASE and CONSTITUENT statements as written

SeTe-12Gie.tdb: HEXAGONAL_A8, type code %, sha256 5ab5c2c49c0744c2…

28: PHASE HEXAGONAL_A8 % 1 1 !
29: CONST HEXAGONAL_A8 : SE TE : !

SeTe-21Fik.tdb: HEXAGONAL_A8, type code %, sha256 5d5099e229e71305…

35: PHASE HEXAGONAL_A8 % 1 1 !
36: CONST HEXAGONAL_A8 : SE TE : !

SeTe-88Gho-LB.tdb: HEXAGONAL_A8, type code %, sha256 a880e2b8c9d01444…

48: PHASE HEXAGONAL_A8 % 1 1 !
49: CONST HEXAGONAL_A8 : SE TE : !

Example references (3 of 3; assessments first):

doi:10.1016/0364-5916(88)90010-7 G. Ghosh, H.L. Lukas, L. Delaey, Calphad, 12, 295-99(1988).
assessment that models this phase
doi:10.1016/j.calphad.2021.102309 O. Fikar, J. Vrestal, A. Kroupa, S.-W. Chen, Calphad, 74, 102309(2021).
assessment that models this phase
doi:10.3139/146.110677 W. Gierlotka, W.-H. Wu, Int. J. Mater. Res., 103, 698-701(2012).
assessment that models this phase

GAS (Se–Te)

Id: phase:se-te:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 413.87–2500 K, x(Te) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:se-te:gas
tdb: tdb:SeTe-88Gho-LB.tdb:GAS

TDB models of GAS (1): PHASE and CONSTITUENT statements as written

SeTe-88Gho-LB.tdb: GAS, type code %, sha256 a880e2b8c9d01444…

51: PHASE GAS:G % 1 1 !
52: CONST GAS:G : SE SE2 SE3 SE4 SE5 SE6 SE7 SE8 TE TE2 TE3 TE4 TE5 TE6 TE7 : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(88)90010-7 G. Ghosh, H.L. Lukas, L. Delaey, Calphad, 12, 295-99(1988).
assessment that models this phase

LIQUID (Se–Te)

Id: phase:se-te:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 493.97–2500 K, x(Te) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:se-te:liquid
tdb: tdb:SeTe-12Gie.tdb:LIQUID, tdb:SeTe-21Fik.tdb:LIQUID, tdb:SeTe-88Gho-LB.tdb:LIQUID

TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written

SeTe-12Gie.tdb: LIQUID, type code %, sha256 5ab5c2c49c0744c2…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : SE TE : !

SeTe-21Fik.tdb: LIQUID, type code %, sha256 5d5099e229e71305…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : SE SETE TE : !

SeTe-88Gho-LB.tdb: LIQUID, type code %, sha256 a880e2b8c9d01444…

43: PHASE LIQUID:L % 1 1 !
44: CONST LIQUID:L : SE TE : !

Example references (3 of 3; assessments first):

doi:10.1016/0364-5916(88)90010-7 G. Ghosh, H.L. Lukas, L. Delaey, Calphad, 12, 295-99(1988).
assessment that models this phase
doi:10.1016/j.calphad.2021.102309 O. Fikar, J. Vrestal, A. Kroupa, S.-W. Chen, Calphad, 74, 102309(2021).
assessment that models this phase
doi:10.3139/146.110677 W. Gierlotka, W.-H. Wu, Int. J. Mater. Res., 103, 698-701(2012).
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}
}