Na–Te phases

8 phases (tier A 5, tier C 2, liquid 1); 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 · Na–Te system page · Markdown · field reference

Phases of the Na–Te system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
HEXAGONAL_A8 phase:na-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	2	1
BCC_A2 phase:na-te:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–370.87 K, x(Te) 0–0	0	1
FCC_A1 phase:na-te:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
HCP_A3 phase:na-te: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:na-te:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 370.87–2500 K, x(Te) 0–1	12	1
NA2TE_C1 phase:na-te:na2te-c1	CaF2 · C1 · cF12 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1236.23 K, x(Te) 0.33333–0.33333	6	1
NATE phase:na-te:nate	NaTe · oP48 · Pbcn (60)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–628.27 K, x(Te) 0.5–0.5	10	1
NATE3 phase:na-te:nate3	NaTe3 · hP48 · P-3c1 (165)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–736.09 K, x(Te) 0.75–0.75	9	1

HEXAGONAL_A8 (Na–Te)

Id: phase:na-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 1 of 1 calculated diagram(s): 300–722.66 K, x(Te) 1–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:na-te:a8-hexagonal, corpus:phase:na-te:hexagonal-a8
paper: paper:10.1016/j.jallcom.2013.11.094:Te
tdb: tdb:NaTe-14Che.tdb:HEXAGONAL_A8

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

NaTe-14Che.tdb: HEXAGONAL_A8, type code %, sha256 345a0a074cafc669…

51: PHASE HEXAGONAL_A8 % 1 1 !
52: CONST HEXAGONAL_A8 : TE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase; reports values for this phase
doi:10.1021/j150301a004 C. A. Kraus, S. W. Glass, Liquid Mixtures of Tellurium and Sodium Telluride. I. Specific Resistance as a Function of Compostion and Temperature, J. Phys. Chem. 33, 984-994 (1929).
cited as the source of values for this phase

BCC_A2 (Na–Te)

Id: phase:na-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: Na 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–370.87 K, x(Te) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:na-te:bcc-a2
tdb: tdb:NaTe-14Che.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

NaTe-14Che.tdb: BCC_A2, type code %B, sha256 345a0a074cafc669…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : NA : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase

FCC_A1 (Na–Te)

Id: phase:na-te:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stoichiometry: Na 1.0000
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:na-te:fcc-a1
tdb: tdb:NaTe-14Che.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

NaTe-14Che.tdb: FCC_A1, type code %A, sha256 345a0a074cafc669…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : NA : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase

HCP_A3 (Na–Te)

Id: phase:na-te: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: Na 1.0000
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:na-te:hcp-a3
tdb: tdb:NaTe-14Che.tdb:HCP_A3

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

NaTe-14Che.tdb: HCP_A3, type code %A, sha256 345a0a074cafc669…

46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : NA : VA: !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase

LIQUID (Na–Te)

Id: phase:na-te:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 370.87–2500 K, x(Te) 0–1
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:na-te:liquid
paper: paper:10.1016/j.jallcom.2013.11.094:liq
tdb: tdb:NaTe-14Che.tdb:LIQUID

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

NaTe-14Che.tdb: LIQUID, type code %, sha256 345a0a074cafc669…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : NA NA2TE NATE3 TE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase; reports values for this phase
doi:10.1021/j150301a004 C. A. Kraus, S. W. Glass, Liquid Mixtures of Tellurium and Sodium Telluride. I. Specific Resistance as a Function of Compostion and Temperature, J. Phys. Chem. 33, 984-994 (1929).
cited as the source of values for this phase
doi:10.1002/bbpc.19890930105 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Thermodynamic properties of molten Na‐Te solutions, Ber Bunsenges Phys Chem 93, 18-24 (1989).
cited as the source of values for this phase

NA2TE_C1 (Na–Te)

Id: phase:na-te:na2te-c1; status assigned
Structure: CaF2 · C1 · cF12 · Fm-3m (225); type st:c1-caf2-cf12; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaaedc and oqmd-11318, space group 225
Stoichiometry: Na 0.6667, Te 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1236.23 K, x(Te) 0.33333–0.33333
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:na-te:na2te-c1
mp: mp:mp-aaaaaedc
oqmd: oqmd:oqmd-11318
paper: paper:10.1016/j.jallcom.2013.11.094:Na2Te
tdb: tdb:NaTe-14Che.tdb:NA2TE_C1

TDB models of NA2TE_C1 (1): PHASE and CONSTITUENT statements as written

NaTe-14Che.tdb: NA2TE_C1, type code %, sha256 345a0a074cafc669…

56: PHASE NA2TE_C1 % 2 2 1 !
57: CONST NA2TE_C1 : NA : TE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19890930105 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Thermodynamic properties of molten Na‐Te solutions, Ber Bunsenges Phys Chem 93, 18-24 (1989).
cited as the source of values for this phase
doi:10.1021/j150301a004 C. A. Kraus, S. W. Glass, Liquid Mixtures of Tellurium and Sodium Telluride. I. Specific Resistance as a Function of Compostion and Temperature, J. Phys. Chem. 33, 984-994 (1929).
cited as the source of values for this phase

NATE (Na–Te)

Id: phase:na-te:nate; status assigned
Structure: NaTe · oP48 · Pbcn (60); type st:nate-op48; 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
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Na 0.5000, Te 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–628.27 K, x(Te) 0.5–0.5
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:na-te:nate
paper: paper:10.1016/j.jallcom.2013.11.094:NaTe
tdb: tdb:NaTe-14Che.tdb:NATE

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

NaTe-14Che.tdb: NATE, type code %, sha256 345a0a074cafc669…

61: PHASE NATE % 2 1 1 !
62: CONST NATE : NA : TE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19890930105 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Thermodynamic properties of molten Na‐Te solutions, Ber Bunsenges Phys Chem 93, 18-24 (1989).
cited as the source of values for this phase
doi:10.1021/j150301a004 C. A. Kraus, S. W. Glass, Liquid Mixtures of Tellurium and Sodium Telluride. I. Specific Resistance as a Function of Compostion and Temperature, J. Phys. Chem. 33, 984-994 (1929).
cited as the source of values for this phase

NATE3 (Na–Te)

Id: phase:na-te:nate3; status assigned
Structure: NaTe3 · hP48 · P-3c1 (165); type st:nate3-hp48; 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
Caveat: not certain from the name or DFT alone (dft_space_group_165_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Na 0.2500, Te 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–736.09 K, x(Te) 0.75–0.75
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:na-te:nate3
paper: paper:10.1016/j.jallcom.2013.11.094:NaTe3
tdb: tdb:NaTe-14Che.tdb:NATE3

TDB models of NATE3 (1): PHASE and CONSTITUENT statements as written

NaTe-14Che.tdb: NATE3, type code %, sha256 345a0a074cafc669…

66: PHASE NATE3 % 2 1 3 !
67: CONST NATE3 : NA : TE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2013.11.094 Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014).
assessment that models this phase; reports values for this phase
doi:10.1021/j150301a004 C. A. Kraus, S. W. Glass, Liquid Mixtures of Tellurium and Sodium Telluride. I. Specific Resistance as a Function of Compostion and Temperature, J. Phys. Chem. 33, 984-994 (1929).
cited as the source of values for this phase
doi:10.1002/bbpc.19890930105 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Thermodynamic properties of molten Na‐Te solutions, Ber Bunsenges Phys Chem 93, 18-24 (1989).
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}
}