# Cu–Te phases

> Cu–Te system: 22 phases (tier A 4, tier C 4, liquid 1, needs_review 13); 20 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/CU-TE.html · Markdown: https://data.orchid-project.org/phases/pages/CU-TE.md

22 phases (tier A 4, tier C 4, liquid 1, needs_review 13); 20 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=CU-TE) · [full JSON](https://data.orchid-project.org/phases/systems/CU-TE.json) · [Cu–Te system page](https://data.orchid-project.org/systems/CU-TE.html) · [Markdown](https://data.orchid-project.org/phases/pages/CU-TE.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Cu–Te system (22)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [HEXAGONAL_A8](#phase-cu-te-a8-hexagonal); _phase:cu-te:a8-hexagonal_ | gamma-Se · A8 · hP3 · P3_121 (152) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–722.63 K, x(Te) 1–1 | 9 | 3 |
| [BCC_A2](#phase-cu-te-bcc-a2); _phase:cu-te:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 |
| [CU2TE_ALPHA](#phase-cu-te-cu2te-alpha); _phase:cu-te:cu2te-alpha_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 300–684.29 K, x(Te) 0.33333–0.36072 | 0 | 3 |
| [CU2TE_BETA](#phase-cu-te-cu2te-beta); _phase:cu-te:cu2te-beta_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 459.12–1373.58 K, x(Te) 0.33333–0.3551 | 0 | 3 |
| [CU2TE_DELTA](#phase-cu-te-cu2te-delta); _phase:cu-te:cu2te-delta_ | Cu2Te · C_h · hP6 · P6/mmm (191) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 624.76–874.73 K, x(Te) 0.33333–0.33333 | 0 | 2 |
| [CU2TE_EPSILON](#phase-cu-te-cu2te-epsilon); _phase:cu-te:cu2te-epsilon_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 874.55–1185.37 K, x(Te) 0.33333–0.33333 | 11 | 2 |
| [CU2TE_ETA](#phase-cu-te-cu2te-eta); _phase:cu-te:cu2te-eta_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 450–593.05 K, x(Te) 0.345–0.345 | 6 | 1 |
| [CU2TE_GAMMA](#phase-cu-te-cu2te-gamma); _phase:cu-te:cu2te-gamma_ | Cu2Te · hP72 · P3m1 (156) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 581.65–625.95 K, x(Te) 0.33333–0.33333 | 4 | 2 |
| [CU2TE_IOTA](#phase-cu-te-cu2te-iota); _phase:cu-te:cu2te-iota_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 520–617.98 K, x(Te) 0.357–0.357 | 8 | 1 |
| [CU2TE_KAPPA](#phase-cu-te-cu2te-kappa); _phase:cu-te:cu2te-kappa_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 492.8–520 K, x(Te) 0.357–0.357 | 6 | 1 |
| [CU2TE_LAMBDA](#phase-cu-te-cu2te-lambda); _phase:cu-te:cu2te-lambda_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–517.99 K, x(Te) 0.354–0.354 | 4 | 1 |
| [CU2TE_THETA](#phase-cu-te-cu2te-theta); _phase:cu-te:cu2te-theta_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–450 K, x(Te) 0.345–0.345 | 2 | 1 |
| [CU2TE_ZETA](#phase-cu-te-cu2te-zeta); _phase:cu-te:cu2te-zeta_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 1148.37–1387.12 K, x(Te) 0.33333–0.33333 | 19 | 2 |
| [CU3TE2](#phase-cu-te-cu3te2); _phase:cu-te:cu3te2_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 917.99–1080 K, x(Te) 0.37–0.37 | 0 | 1 |
| [CU4TE3_BETA](#phase-cu-te-cu4te3-beta); _phase:cu-te:cu4te3-beta_ | Cu3Te2 · cF28 · F-43m (216) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 588.49–1058.31 K, x(Te) 0.3893–0.42857 | 27 | 3 |
| [CU4TE3_C38](#phase-cu-te-cu4te3-c38); _phase:cu-te:cu4te3-c38_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 300–650.03 K, x(Te) 0.42857–0.42857 | 12 | 3 |
| [CU7TE4](#phase-cu-te-cu7te4); _phase:cu-te:cu7te4_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–542.88 K, x(Te) 0.36–0.36 | 4 | 1 |
| [CUTE_ALPHA](#phase-cu-te-cute-alpha); _phase:cu-te:cute-alpha_ | CuTe · oP4 · Pmmn (59) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–619.84 K, x(Te) 0.5–0.5 | 6 | 3 |
| [CUTE_BETA](#phase-cu-te-cute-beta); _phase:cu-te:cute-beta_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 619.19–697 K, x(Te) 0.5–0.5 | 23 | 3 |
| [FCC_A1](#phase-cu-te-fcc-a1); _phase:cu-te:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1357.77 K, x(Te) 0–0 | 8 | 3 |
| [HCP_A3](#phase-cu-te-hcp-a3); _phase:cu-te:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 |
| [LIQUID](#phase-cu-te-liquid); _phase:cu-te:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 621.79–2500 K, x(Te) 0–1 | 49 | 3 |

## HEXAGONAL_A8 (Cu–Te)

- Id: `phase:cu-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 3 of 3 calculated diagram(s): 300–722.63 K, x(Te) 1–1
- Literature: 9 values (9 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:a8-hexagonal)

Names (7): _corpus: _corpus:phase:cu-te:a8-hexagonal, corpus:phase:cu-te:hexagonal-a8  
_paper: _paper:10.1007/s11669-022-00950-z:HEX, paper:10.1016/j.jallcom.2020.157373:(Te)  
_tdb: _tdb:CuTe-21Hua.tdb:HEXAGONAL_A8, tdb:CuTe-22Yu.tdb:HEXAGONAL_A8, tdb:CuTe-23Hut.tdb:HEXAGONAL_A8  


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

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): HEXAGONAL_A8, type code %, sha256 `7d81feae126f40f4…`

~~~~text
54: PHASE HEXAGONAL_A8 % 1 1 !
55: CONST HEXAGONAL_A8 : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): HEXAGONAL_A8, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
54: PHASE HEXAGONAL_A8 % 1 1 !
55: CONST HEXAGONAL_A8 : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): HEXAGONAL_A8, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
53: PHASE HEXAGONAL_A8 % 1 1 !
54: CONST HEXAGONAL_A8 : TE : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## BCC_A2 (Cu–Te)

- Id: `phase:cu-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: Cu 1.0000
- Stability: not stable in 3 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:bcc-a2)

Names (4): _corpus: _corpus:phase:cu-te:bcc-a2  
_tdb: _tdb:CuTe-21Hua.tdb:BCC_A2, tdb:CuTe-22Yu.tdb:BCC_A2, tdb:CuTe-23Hut.tdb:BCC_A2  


### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): BCC_A2, type code %B, sha256 `7d81feae126f40f4…`

~~~~text
44: PHASE BCC_A2 %B 2 1 3 !
45: CONST BCC_A2 : CU : VA : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): BCC_A2, type code %B, sha256 `1478a3ddfca00a47…`

~~~~text
44: PHASE BCC_A2 %B 2 1 3 !
45: CONST BCC_A2 : CU : VA : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): BCC_A2, type code %B, sha256 `849aa90ae59ba1b7…`

~~~~text
43: PHASE BCC_A2 %B 2 1 3 !
44: CONST BCC_A2 : CU : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_

## CU2TE_ALPHA (Cu–Te)

- Id: `phase:cu-te:cu2te-alpha`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_ALPHA: Cu2Te
- Stability: stable in 3 of 3 calculated diagram(s): 300–684.29 K, x(Te) 0.33333–0.36072
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-alpha)

Names (4): _corpus: _corpus:phase:cu-te:cu2te-alpha  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_ALPHA, tdb:CuTe-22Yu.tdb:CU2TE_ALPHA, tdb:CuTe-23Hut.tdb:CU2TE_ALPHA  


### TDB models of CU2TE_ALPHA (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_ALPHA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
59: PHASE CU2TE_ALPHA % 2 2 1 !
60: CONST CU2TE_ALPHA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_ALPHA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
59: PHASE CU2TE_ALPHA % 2 2 1 !
60: CONST CU2TE_ALPHA : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CU2TE_ALPHA, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
58: PHASE CU2TE_ALPHA % 2 2 1 !
59: CONST CU2TE_ALPHA : CU% TE : TE : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_

## CU2TE_BETA (Cu–Te)

- Id: `phase:cu-te:cu2te-beta`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_rows_disagree
- Candidate (sgte_mmc2): Cu2Te · C_h · hP6 · P6/mmm (191) — Hallstedt 2025 mmc2 row for CU2TE_BETA: Cu2Te (weissite)
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_BETA: Cu2Te
- Candidate (tdb_comment): Cu2Te · hP6 · P6/mmm, SB: C_h — CuTe-23Hut.tdb: 'Prototype Cu2Te (hP6, P6/mmm, SB: C_h), weissite, delta'
- Candidate (tdb_comment): Cu2Te · hP72 · P3m1 — CuTe-23Hut.tdb: 'Prototype Cu2Te (hP72, P3m1), gamma'
- Stability: stable in 3 of 3 calculated diagram(s): 459.12–1373.58 K, x(Te) 0.33333–0.3551
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-beta)

Names (4): _corpus: _corpus:phase:cu-te:cu2te-beta  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_BETA, tdb:CuTe-22Yu.tdb:CU2TE_BETA, tdb:CuTe-23Hut.tdb:CU2TE_BETA  


### TDB models of CU2TE_BETA (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_BETA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
64: PHASE CU2TE_BETA % 2 2 1 !
65: CONST CU2TE_BETA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_BETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
64: PHASE CU2TE_BETA % 2 2 1 !
65: CONST CU2TE_BETA : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CU2TE_BETA, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
66: PHASE CU2TE_BETA % 2 2 1 !
67: CONST CU2TE_BETA : CU% TE : TE : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_

## CU2TE_DELTA (Cu–Te)

- Id: `phase:cu-te:cu2te-delta`; status `assigned`
- Structure: Cu2Te · C_h · hP6 · P6/mmm (191); type `st:c-h-cu2te-hp6`; 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, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Cu 0.6667, Te 0.3333
- Stability: stable in 2 of 2 calculated diagram(s): 624.76–874.73 K, x(Te) 0.33333–0.33333
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-delta)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-delta  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_DELTA, tdb:CuTe-22Yu.tdb:CU2TE_DELTA  


### TDB models of CU2TE_DELTA (2): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_DELTA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
74: PHASE CU2TE_DELTA % 2 2 1 !
75: CONST CU2TE_DELTA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_DELTA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
74: PHASE CU2TE_DELTA % 2 2 1 !
75: CONST CU2TE_DELTA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_

## CU2TE_EPSILON (Cu–Te)

- Id: `phase:cu-te:cu2te-epsilon`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · cF\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) · Fd-3m (227) — Hallstedt 2025 mmc2 row for CU2TE_EPSILON: Cu2Te
- Stoichiometry: Cu 0.6667, Te 0.3333
- Stability: stable in 2 of 2 calculated diagram(s): 874.55–1185.37 K, x(Te) 0.33333–0.33333
- Literature: 11 values (11 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-epsilon)

Names (5): _corpus: _corpus:phase:cu-te:cu2te-epsilon  
_paper: _paper:10.1007/s11669-022-00950-z:εCu2Te, paper:10.1016/j.jallcom.2020.157373:ε-Cu2Te  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_EPSILON, tdb:CuTe-22Yu.tdb:CU2TE_EPSILON  


### TDB models of CU2TE_EPSILON (2): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_EPSILON, type code %, sha256 `7d81feae126f40f4…`

~~~~text
79: PHASE CU2TE_EPSILON % 2 2 1 !
80: CONST CU2TE_EPSILON : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_EPSILON, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
79: PHASE CU2TE_EPSILON % 2 2 1 !
80: CONST CU2TE_EPSILON : CU : TE : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## CU2TE_ETA (Cu–Te)

- Id: `phase:cu-te:cu2te-eta`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_ETA: Cu2Te
- Stoichiometry: Cu 0.6550, Te 0.3450
- Stability: stable in 1 of 1 calculated diagram(s): 450–593.05 K, x(Te) 0.345–0.345
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-eta)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-eta  
_paper: _paper:10.1007/s11669-022-00950-z:ηCu2Te  
_tdb: _tdb:CuTe-22Yu.tdb:CU2TE_ETA  


### TDB models of CU2TE_ETA (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_ETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
94: PHASE CU2TE_ETA % 2 0.655 0.345 !
95: CONST CU2TE_ETA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_GAMMA (Cu–Te)

- Id: `phase:cu-te:cu2te-gamma`; status `assigned`
- Structure: Cu2Te · hP72 · P3m1 (156); type `st:cu2te-hp72`; 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, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Cu 0.6667, Te 0.3333
- Stability: stable in 2 of 2 calculated diagram(s): 581.65–625.95 K, x(Te) 0.33333–0.33333
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-gamma)

Names (4): _corpus: _corpus:phase:cu-te:cu2te-gamma  
_paper: _paper:10.1007/s11669-022-00950-z:γCu2Te  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_GAMMA, tdb:CuTe-22Yu.tdb:CU2TE_GAMMA  


### TDB models of CU2TE_GAMMA (2): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_GAMMA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
69: PHASE CU2TE_GAMMA % 2 2 1 !
70: CONST CU2TE_GAMMA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_GAMMA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
69: PHASE CU2TE_GAMMA % 2 2 1 !
70: CONST CU2TE_GAMMA : CU : TE : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_IOTA (Cu–Te)

- Id: `phase:cu-te:cu2te-iota`; status `needs_review`
- No structure assigned. Why: name_has_descriptive_tokens:IOTA; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · hR\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) · P3m1 (156) — Hallstedt 2025 mmc2 row for CU2TE_IOTA: Cu2Te
- Stoichiometry: Cu 0.6430, Te 0.3570
- Stability: stable in 1 of 1 calculated diagram(s): 520–617.98 K, x(Te) 0.357–0.357
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-iota)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-iota  
_paper: _paper:10.1007/s11669-022-00950-z:ιCu2Te  
_tdb: _tdb:CuTe-22Yu.tdb:CU2TE_IOTA  


### TDB models of CU2TE_IOTA (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_IOTA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
109: PHASE CU2TE_IOTA % 2 0.643 0.357 !
110: CONST CU2TE_IOTA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_KAPPA (Cu–Te)

- Id: `phase:cu-te:cu2te-kappa`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · m\*\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_KAPPA: Cu2Te
- Stoichiometry: Cu 0.6430, Te 0.3570
- Stability: stable in 1 of 1 calculated diagram(s): 492.8–520 K, x(Te) 0.357–0.357
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-kappa)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-kappa  
_paper: _paper:10.1007/s11669-022-00950-z:κCu2Te  
_tdb: _tdb:CuTe-22Yu.tdb:CU2TE_KAPPA  


### TDB models of CU2TE_KAPPA (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_KAPPA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
104: PHASE CU2TE_KAPPA % 2 0.643 0.357 !
105: CONST CU2TE_KAPPA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_LAMBDA (Cu–Te)

- Id: `phase:cu-te:cu2te-lambda`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · hP\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_LAMBDA: Cu2Te
- Stoichiometry: Cu 0.6460, Te 0.3540
- Stability: stable in 1 of 1 calculated diagram(s): 300–517.99 K, x(Te) 0.354–0.354
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-lambda)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-lambda  
_paper: _paper:10.1007/s11669-022-00950-z:λCu2Te  
_tdb: _tdb:CuTe-22Yu.tdb:CU2TE_LAMBDA  


### TDB models of CU2TE_LAMBDA (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_LAMBDA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
99: PHASE CU2TE_LAMBDA % 2 0.646 0.354 !
100: CONST CU2TE_LAMBDA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_THETA (Cu–Te)

- Id: `phase:cu-te:cu2te-theta`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · o\*\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_THETA: Cu2Te
- Stoichiometry: Cu 0.6550, Te 0.3450
- Stability: stable in 1 of 1 calculated diagram(s): 300–450 K, x(Te) 0.345–0.345
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-theta)

Names (3): _corpus: _corpus:phase:cu-te:cu2te-theta  
_paper: _paper:10.1007/s11669-022-00950-z:θCu2Te  
_tdb: _tdb:CuTe-22Yu.tdb:CU2TE_THETA  


### TDB models of CU2TE_THETA (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_THETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
89: PHASE CU2TE_THETA % 2 0.655 0.345 !
90: CONST CU2TE_THETA : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CU2TE_ZETA (Cu–Te)

- Id: `phase:cu-te:cu2te-zeta`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Cu2Te) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Cu2Te) — Hallstedt 2025 mmc2 row for CU2TE_ZETA: Cu2Te
- Stoichiometry: Cu 0.6667, Te 0.3333
- Stability: stable in 2 of 2 calculated diagram(s): 1148.37–1387.12 K, x(Te) 0.33333–0.33333
- Literature: 19 values (19 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu2te-zeta)

Names (5): _corpus: _corpus:phase:cu-te:cu2te-zeta  
_paper: _paper:10.1007/s11669-022-00950-z:ζCu2Te, paper:10.1016/j.jallcom.2020.157373:ζ-Cu2Te  
_tdb: _tdb:CuTe-21Hua.tdb:CU2TE_ZETA, tdb:CuTe-22Yu.tdb:CU2TE_ZETA  


### TDB models of CU2TE_ZETA (2): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU2TE_ZETA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
84: PHASE CU2TE_ZETA % 2 2 1 !
85: CONST CU2TE_ZETA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU2TE_ZETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
84: PHASE CU2TE_ZETA % 2 2 1 !
85: CONST CU2TE_ZETA : CU : TE : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## CU3TE2 (Cu–Te)

- Id: `phase:cu-te:cu3te2`; status `needs_review`
- No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_on_hull_entry_in_both; no_structure_token
- Candidate (sgte_mmc2): Cu3Te2 · oP6 · Pmmn (59) — Hallstedt 2025 mmc2 row for CU3TE2: Cu3Te2
- Candidate (tdb_comment): Cu3Te2 · oP6 · Pmmn — CuTe-22Yu.tdb: 'Prototype Cu3Te2 (oP6, Pmmn)'
- Stoichiometry: Cu 0.6300, Te 0.3700
- Stability: stable in 1 of 1 calculated diagram(s): 917.99–1080 K, x(Te) 0.37–0.37
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu3te2)

Names (2): _corpus: _corpus:phase:cu-te:cu3te2  
_tdb: _tdb:CuTe-22Yu.tdb:CU3TE2  


### TDB models of CU3TE2 (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU3TE2, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
119: PHASE CU3TE2 % 2 0.63 0.37 !
120: CONST CU3TE2 : CU : TE : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_

## CU4TE3_BETA (Cu–Te)

- Id: `phase:cu-te:cu4te3-beta`; status `assigned`
- Structure: Cu3Te2 · cF28 · F-43m (216); type `st:cu3te2-cf28`; 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 3 of 3 calculated diagram(s): 588.49–1058.31 K, x(Te) 0.3893–0.42857
- Literature: 27 values (27 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu4te3-beta)

Names (6): _corpus: _corpus:phase:cu-te:cu4te3-beta  
_paper: _paper:10.1007/s11669-022-00950-z:βCu4Te3, paper:10.1016/j.jallcom.2020.157373:H-Cu4Te3  
_tdb: _tdb:CuTe-21Hua.tdb:CU4TE3_BETA, tdb:CuTe-22Yu.tdb:CU4TE3_BETA, tdb:CuTe-23Hut.tdb:CU4TE3_BETA  


### TDB models of CU4TE3_BETA (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU4TE3_BETA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
95: PHASE CU4TE3_BETA % 2 4 3 !
96: CONST CU4TE3_BETA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU4TE3_BETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
130: PHASE CU4TE3_BETA % 2 4 3 !
131: CONST CU4TE3_BETA : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CU4TE3_BETA, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
77: PHASE CU4TE3_BETA % 2 4 3 !
78: CONST CU4TE3_BETA : CU : CU TE% : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## CU4TE3_C38 (Cu–Te)

- Id: `phase:cu-te:cu4te3-c38`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C38; stoichiometry_contradicts_C38:CuTe-21Hua.tdb; stoichiometry_contradicts_C38:CuTe-22Yu.tdb; stoichiometry_contradicts_C38:CuTe-23Hut.tdb
- Candidate (literature_printed): Cu2Sb · tP6 — printed with a label mapped to this phase
- Candidate (name_token): Cu2Sb · C38 · tP6 · P4/nmm (129) — Strukturbericht/word 'C38' in the TDB name
- Candidate (sgte_mmc2): Cu2Sb · C38 · tP6 · P4/nmm (129) — Hallstedt 2025 mmc2 row for CU4TE3_C38: Cu4Te3 (low T, ricardite)
- Candidate (tdb_comment): Cu2Sb · tP6 · P4/nmm — CuTe-21Hua.tdb: 'Prototype Cu2Sb (tP6, P4/nmm), ricardite'
- Candidate (tdb_comment): Cu2Sb · tP6 · P4/nmm — CuTe-22Yu.tdb: 'Prototype Cu2Sb (tP6, P4/nmm), ricardite'
- Candidate (tdb_comment): Cu2Sb · tP6 · P4/nmm — CuTe-23Hut.tdb: 'Prototype Cu2Sb (tP6, P4/nmm), ricardite'
- Stoichiometry: Cu 0.5714, Te 0.4286
- Stability: stable in 3 of 3 calculated diagram(s): 300–650.03 K, x(Te) 0.42857–0.42857
- Literature: 12 values (12 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu4te3-c38)

Names (6): _corpus: _corpus:phase:cu-te:cu4te3-c38  
_paper: _paper:10.1007/s11669-022-00950-z:αCu4Te3, paper:10.1016/j.jallcom.2020.157373:L-Cu4Te3  
_tdb: _tdb:CuTe-21Hua.tdb:CU4TE3_C38, tdb:CuTe-22Yu.tdb:CU4TE3_C38, tdb:CuTe-23Hut.tdb:CU4TE3_C38  


### TDB models of CU4TE3_C38 (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CU4TE3_C38, type code %, sha256 `7d81feae126f40f4…`

~~~~text
90: PHASE CU4TE3_C38 % 2 4 3 !
91: CONST CU4TE3_C38 : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU4TE3_C38, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
125: PHASE CU4TE3_C38 % 2 4 3 !
126: CONST CU4TE3_C38 : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CU4TE3_C38, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
72: PHASE CU4TE3_C38 % 2 4 3 !
73: CONST CU4TE3_C38 : CU : TE : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## CU7TE4 (Cu–Te)

- Id: `phase:cu-te:cu7te4`; status `needs_review`
- No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_on_hull_entry_in_both; no_structure_token
- Candidate (literature_printed): Cu7Te4 · hP22 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Cu7Te4 · hP22 · P-3m1 (164) — Hallstedt 2025 mmc2 row for CU7TE4: Cu7Te4
- Candidate (tdb_comment): Cu7Te4 · hP22 · P-3m1 — CuTe-22Yu.tdb: 'Prototype Cu7Te4 (hP22, P-3m1), Cu2Te-mu'
- Stoichiometry: Cu 0.6400, Te 0.3600
- Stability: stable in 1 of 1 calculated diagram(s): 300–542.88 K, x(Te) 0.36–0.36
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cu7te4)

Names (3): _corpus: _corpus:phase:cu-te:cu7te4  
_paper: _paper:10.1007/s11669-022-00950-z:Cu0.63Te0.37  
_tdb: _tdb:CuTe-22Yu.tdb:CU7TE4  


### TDB models of CU7TE4 (1): PHASE and CONSTITUENT statements as written

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CU7TE4, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
114: PHASE CU7TE4 % 2 0.64 0.36 !
115: CONST CU7TE4 : CU : TE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_

## CUTE_ALPHA (Cu–Te)

- Id: `phase:cu-te:cute-alpha`; status `assigned`
- Structure: CuTe · oP4 · Pmmn (59); type `st:cute-op4`; 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, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Cu 0.5000, Te 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 300–619.84 K, x(Te) 0.5–0.5
- Literature: 6 values (6 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cute-alpha)

Names (6): _corpus: _corpus:phase:cu-te:cute-alpha  
_paper: _paper:10.1007/s11669-022-00950-z:αCuTe, paper:10.1016/j.jallcom.2020.157373:L-CuTe  
_tdb: _tdb:CuTe-21Hua.tdb:CUTE_ALPHA, tdb:CuTe-22Yu.tdb:CUTE_ALPHA, tdb:CuTe-23Hut.tdb:CUTE_ALPHA  


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

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CUTE_ALPHA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
100: PHASE CUTE_ALPHA % 2 1 1 !
101: CONST CUTE_ALPHA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CUTE_ALPHA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
135: PHASE CUTE_ALPHA % 2 1 1 !
136: CONST CUTE_ALPHA : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CUTE_ALPHA, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
82: PHASE CUTE_ALPHA % 2 1 1 !
83: CONST CUTE_ALPHA : CU : TE : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_

## CUTE_BETA (Cu–Te)

- Id: `phase:cu-te:cute-beta`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (dft_mp): Pmmn (59) — on-hull MP CuTe at x(TE)=0.5000
- Candidate (dft_oqmd): Pmmn (59) — on-hull OQMD Cu1 Te1 at x(TE)=0.5000
- Candidate (literature_printed): (CuTe) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (CuTe) — Hallstedt 2025 mmc2 row for CUTE_BETA: CuTe (high T)
- Stoichiometry: Cu 0.5000, Te 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 619.19–697 K, x(Te) 0.5–0.5
- Literature: 23 values (23 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:cute-beta)

Names (6): _corpus: _corpus:phase:cu-te:cute-beta  
_paper: _paper:10.1007/s11669-022-00950-z:βCuTe, paper:10.1016/j.jallcom.2020.157373:H-CuTe  
_tdb: _tdb:CuTe-21Hua.tdb:CUTE_BETA, tdb:CuTe-22Yu.tdb:CUTE_BETA, tdb:CuTe-23Hut.tdb:CUTE_BETA  


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

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): CUTE_BETA, type code %, sha256 `7d81feae126f40f4…`

~~~~text
105: PHASE CUTE_BETA % 2 1 1 !
106: CONST CUTE_BETA : CU : TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): CUTE_BETA, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
140: PHASE CUTE_BETA % 2 1 1 !
141: CONST CUTE_BETA : CU : TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): CUTE_BETA, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
87: PHASE CUTE_BETA % 2 1 1 !
88: CONST CUTE_BETA : CU : TE : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## FCC_A1 (Cu–Te)

- Id: `phase:cu-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: Cu 1.0000
- Stability: stable in 3 of 3 calculated diagram(s): 300–1357.77 K, x(Te) 0–0
- Literature: 8 values (8 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:fcc-a1)

Names (6): _corpus: _corpus:phase:cu-te:fcc-a1  
_paper: _paper:10.1007/s11669-022-00950-z:FCC, paper:10.1016/j.jallcom.2020.157373:(Cu)  
_tdb: _tdb:CuTe-21Hua.tdb:FCC_A1, tdb:CuTe-22Yu.tdb:FCC_A1, tdb:CuTe-23Hut.tdb:FCC_A1  


### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): FCC_A1, type code %A, sha256 `7d81feae126f40f4…`

~~~~text
39: PHASE FCC_A1 %A 2 1 1 !
40: CONST FCC_A1 : CU : VA : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): FCC_A1, type code %A, sha256 `1478a3ddfca00a47…`

~~~~text
39: PHASE FCC_A1 %A 2 1 1 !
40: CONST FCC_A1 : CU : VA : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): FCC_A1, type code %A, sha256 `849aa90ae59ba1b7…`

~~~~text
38: PHASE FCC_A1 %A 2 1 1 !
39: CONST FCC_A1 : CU : VA : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_cited as the source of values for this phase_

## HCP_A3 (Cu–Te)

- Id: `phase:cu-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: Cu 1.0000
- Stability: not stable in 3 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:hcp-a3)

Names (4): _corpus: _corpus:phase:cu-te:hcp-a3  
_tdb: _tdb:CuTe-21Hua.tdb:HCP_A3, tdb:CuTe-22Yu.tdb:HCP_A3, tdb:CuTe-23Hut.tdb:HCP_A3  


### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): HCP_A3, type code %A, sha256 `7d81feae126f40f4…`

~~~~text
49: PHASE HCP_A3 %A 2 1 0.5 !
50: CONST HCP_A3 : CU : VA : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): HCP_A3, type code %A, sha256 `1478a3ddfca00a47…`

~~~~text
49: PHASE HCP_A3 %A 2 1 0.5 !
50: CONST HCP_A3 : CU : VA : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): HCP_A3, type code %A, sha256 `849aa90ae59ba1b7…`

~~~~text
48: PHASE HCP_A3 %A 2 1 0.5 !
49: CONST HCP_A3 : CU : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase_

## LIQUID (Cu–Te)

- Id: `phase:cu-te:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 621.79–2500 K, x(Te) 0–1
- Literature: 49 values (49 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-te:liquid)

Names (9): _corpus: _corpus:phase:cu-te:liquid  
_paper: _paper:10.1007/s11669-022-00950-z:L1, paper:10.1007/s11669-022-00950-z:L2, paper:10.1016/j.jallcom.2020.157373:L, paper:10.1016/j.jallcom.2020.157373:L1, paper:10.1016/j.jallcom.2020.157373:L2  
_tdb: _tdb:CuTe-21Hua.tdb:LIQUID, tdb:CuTe-22Yu.tdb:LIQUID, tdb:CuTe-23Hut.tdb:LIQUID  


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

[CuTe-21Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-21Hua.tdb): LIQUID, type code %, sha256 `7d81feae126f40f4…`

~~~~text
34: PHASE LIQUID:L % 1 1 !
35: CONST LIQUID:L : CU CU2TE TE : !
~~~~

[CuTe-22Yu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-22Yu.tdb): LIQUID, type code %, sha256 `1478a3ddfca00a47…`

~~~~text
34: PHASE LIQUID:L % 1 1 !
35: CONST LIQUID:L : CU CU2TE TE : !
~~~~

[CuTe-23Hut.tdb](https://orchid-project.org/data/databases/sgte-binary/CuTe-23Hut.tdb): LIQUID, type code %, sha256 `849aa90ae59ba1b7…`

~~~~text
33: PHASE LIQUID:L % 1 1 !
34: CONST LIQUID:L : CU CU2TE TE : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2020.157373](https://doi.org/10.1016/j.jallcom.2020.157373) Dandan Huang, Rumo Han, Yao Wang, Tianfan Ye, The Cu–Te system: Phase relations determination and thermodynamic assessment, Journal of Alloys and Compounds 855, 157373 (2021).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s11669-022-00950-z](https://doi.org/10.1007/s11669-022-00950-z) Shangzhao Yu, Jiong Wang, Dongyu Cui, Shanxiong Chen, Qing Wu, Yong Du, Thermodynamic Modelling of the Te-X (X = Cu, Ga, Li, Sr) Systems, J. Phase Equilib. Diffus. 43, 193-213 (2022).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-023-01032-4](https://doi.org/10.1007/s11669-023-01032-4) Yohanes Hutabalian, Sinn-wen Chen, Wojciech Gierlotka, Phase Equilibria of the Cu-Se-Te Ternary System, J. Phase Equilib. Diffus. 44, 181-199 (2023).  
_assessment that models this phase_
- [doi:10.1023/a:1024003932461](https://doi.org/10.1023/a:1024003932461) A. S. Pashinkin, V. A. Fedorov, Phase Equilibria in the Cu–Te System, Inorganic Materials 39, 539-554 (2003).  
_cited as the source of values for this phase_
- [doi:10.1002/zaac.19070540106](https://doi.org/10.1002/zaac.19070540106) Masumi Chikashige, Metallographische Mitteilungen aus dem Institut für anorganische Chemie der Universität Göttingen. XLV. Über Kupfer‐Tellur, Z. Anorg. Chem. 54, 50-57 (1907).  
_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). 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).
