Se–Zn phases

5 phases (tier A 3, liquid 1, gas 1); 4 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–Zn system page · Markdown · field reference

Phases of the Se–Zn system (5)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
HEXAGONAL_A8 phase:se-zn:a8-hexagonal	gamma-Se · A8 · hP3 · P3_121 (152)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–494 K, x(Se) 1–1	1	1
GAS phase:se-zn:gas	gas	gas	stable in 1 of 1 calculated diagram(s): 989.69–2500 K, x(Se) 0–1	0	1
HCP_A3 phase:se-zn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2498.93 K, x(Se) 0–0	1	1
LIQUID phase:se-zn:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 300–2498.93 K, x(Se) 0–1	7	1
ZNSE_B3 phase:se-zn:znse-b3	ZnS (sphalerite) · B3 · cF8 · F-43m (216)	tier A: standard phase name	not stable in 1 calculated diagram(s)	15	1

HEXAGONAL_A8 (Se–Zn)

Id: phase:se-zn: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: Se 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–494 K, x(Se) 1–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:se-zn:a8-hexagonal, corpus:phase:se-zn:hexagonal-a8
paper: paper:10.1016/j.jallcom.2014.08.001:(Se)
tdb: tdb:ZnSe-14Che.tdb:HEXAGONAL_A8

TDB models of HEXAGONAL_A8 (1): PHASE and CONSTITUENT statements as written

ZnSe-14Che.tdb: HEXAGONAL_A8, type code %, sha256 7827c472586d3aba…

43: PHASE HEXAGONAL_A8 % 1 1 !
44: CONST HEXAGONAL_A8 : SE : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2014.08.001 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for the Bi–Se and Zn–Se binary systems, Journal of Alloys and Compounds 617, 423-428 (2014).
assessment that models this phase; reports values for this phase

GAS (Se–Zn)

Id: phase:se-zn:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 989.69–2500 K, x(Se) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:se-zn:gas
tdb: tdb:ZnSe-14Che.tdb:GAS

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

ZnSe-14Che.tdb: GAS, type code %, sha256 7827c472586d3aba…

51: PHASE GAS:G % 1 1 !
52: CONST GAS:G : SE SE2 SE3 SE4 SE5 SE6 SE7 SE8 ZNSE ZN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2014.08.001 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for the Bi–Se and Zn–Se binary systems, Journal of Alloys and Compounds 617, 423-428 (2014).
assessment that models this phase

HCP_A3 (Se–Zn)

Id: phase:se-zn:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stoichiometry: Zn 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–2498.93 K, x(Se) 0–0
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:se-zn:hcp-a3
paper: paper:10.1016/j.jallcom.2014.08.001:(Zn)
tdb: tdb:ZnSe-14Che.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

ZnSe-14Che.tdb: HCP_A3, type code %A, sha256 7827c472586d3aba…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : ZN : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2014.08.001 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for the Bi–Se and Zn–Se binary systems, Journal of Alloys and Compounds 617, 423-428 (2014).
assessment that models this phase; reports values for this phase

LIQUID (Se–Zn)

Id: phase:se-zn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–2498.93 K, x(Se) 0–1
Literature: 7 values (7 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:se-zn:liquid
paper: paper:10.1016/j.jallcom.2014.08.001:Liq, paper:10.1016/j.jallcom.2014.08.001:liquid
tdb: tdb:ZnSe-14Che.tdb:LIQUID

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

ZnSe-14Che.tdb: LIQUID, type code %, sha256 7827c472586d3aba…

33: PHASE LIQUID:L % 1 1 !
34: CONST LIQUID:L : SE ZN ZNSE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2014.08.001 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for the Bi–Se and Zn–Se binary systems, Journal of Alloys and Compounds 617, 423-428 (2014).
assessment that models this phase; reports values for this phase
doi:10.1149/1.2427507 Albrecht G. Fischer, Preparation and Properties of ZnS-Type Crystals from the Melt, J. Electrochem. Soc. 106, 838 (1959).
cited as the source of values for this phase

ZNSE_B3 (Se–Zn)

Id: phase:se-zn:znse-b3; status assigned
Structure: ZnS (sphalerite) · B3 · cF8 · F-43m (216); type st:b3-zns-sphalerite-cf8; tier A: standard phase name; confidence high
Stoichiometry: Se 0.5000, Zn 0.5000
Stability: not stable in 1 calculated diagram(s)
Literature: 15 values (15 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:se-zn:znse-b3
paper: paper:10.1016/j.jallcom.2014.08.001:ZnSe
tdb: tdb:ZnSe-14Che.tdb:ZNSE_B3

TDB models of ZNSE_B3 (1): PHASE and CONSTITUENT statements as written

ZnSe-14Che.tdb: ZNSE_B3, type code %, sha256 7827c472586d3aba…

48: PHASE ZNSE_B3 % 2 1 1 !
49: CONST ZNSE_B3 : ZN : SE : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2014.08.001 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for the Bi–Se and Zn–Se binary systems, Journal of Alloys and Compounds 617, 423-428 (2014).
assessment that models this phase; reports values for this phase
doi:10.1021/j100813a010 W. J. Wösten, M. G. Geers, THE VAPOR PRESSURE OF ZINC SELENIDE, J. Phys. Chem. 66, 1252-1253 (1962).
cited as the source of values for this phase
doi:10.1039/tf9635902851 P. Goldfinger, M. Jeunehomme, Mass spectrometric and Knudsen-cell vaporization studies of group 2B-6B compounds, Trans. Faraday Soc. 59, 2851 (1963).
cited as the source of values for this phase
doi:10.1149/1.2427507 Albrecht G. Fischer, Preparation and Properties of ZnS-Type Crystals from the Melt, J. Electrochem. Soc. 106, 838 (1959).
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). 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}
}