Gd–Te phases

11 phases (tier A 5, tier C 5, liquid 1); 10 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 · Gd–Te system page · Markdown · field reference

Phases of the Gd–Te system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
HEXAGONAL_A8 phase:gd-te:a8-hexagonal	gamma-Se · A8 · hP3 · P3_121 (152)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.8 K, x(Te) 1–1	0	1
BCC_A2 phase:gd-te:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1508.16–1588.11 K, x(Te) 0–0	0	1
FCC_A1 phase:gd-te:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
GD2TE3 phase:gd-te:gd2te3	Th2S3 · oP20 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1541.18 K, x(Te) 0.57178–0.6	3	1
GD2TE5 phase:gd-te:gd2te5	Nd2Te5 · oC28 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1191.68 K, x(Te) 0.71429–0.71429	3	1
GD4TE7 phase:gd-te:gd4te7	UAs2 · tP6 · P4/nmm (129)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1445.07 K, x(Te) 0.63636–0.63636	1	1
GDTE_B1 phase:gd-te:gdte-b1	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2100.31 K, x(Te) 0.5–0.5	0	1
GDTE2 phase:gd-te:gdte2	Fe2As · tP6 · P4/nmm (129)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1271.99 K, x(Te) 0.66667–0.66667	2	1
GDTE3 phase:gd-te:gdte3	NdTe3 · oC16 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1104.88 K, x(Te) 0.75–0.75	3	1
HCP_A3 phase:gd-te:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1508.16 K, x(Te) 0–0	0	1
LIQUID phase:gd-te:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 718.55–2500 K, x(Te) 0–1	1	1

HEXAGONAL_A8 (Gd–Te)

Id: phase:gd-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): 300–2499.8 K, x(Te) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:gd-te:a8-hexagonal
tdb: tdb:GdTe-23Cui.tdb:HEXAGONAL_A8

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

GdTe-23Cui.tdb: HEXAGONAL_A8, type code %, sha256 4411ddc5ee70cff7…

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

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase

BCC_A2 (Gd–Te)

Id: phase:gd-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: Gd 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 1508.16–1588.11 K, x(Te) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:gd-te:bcc-a2
tdb: tdb:GdTe-23Cui.tdb:BCC_A2

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

GdTe-23Cui.tdb: BCC_A2, type code %B, sha256 4411ddc5ee70cff7…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : GD : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase

FCC_A1 (Gd–Te)

Id: phase:gd-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: Gd 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:gd-te:fcc-a1
tdb: tdb:GdTe-23Cui.tdb:FCC_A1

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

GdTe-23Cui.tdb: FCC_A1, type code %A, sha256 4411ddc5ee70cff7…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : GD : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase

GD2TE3 (Gd–Te)

Id: phase:gd-te:gd2te3; status assigned
Structure: Th2S3 · oP20 · Pnma (62); type st:th2s3-op20; 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_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 1 of 1 calculated diagram(s): 300–1541.18 K, x(Te) 0.57178–0.6
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:gd2te3
paper: paper:10.1007/s11669-023-01051-1:Gd2Te3
tdb: tdb:GdTe-23Cui.tdb:GD2TE3

TDB models of GD2TE3 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GD2TE3, type code %, sha256 4411ddc5ee70cff7…

60: PHASE GD2TE3 % 3 0.4 0.5714 0.0286 !
61: CONST GD2TE3 : GD : TE : GD TE : !

Example references (2 of 2; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports values for this phase
doi:10.1107/s0021889887087065 J. S. Swinnea, H. Steinfink, L. R. Danielson, Crystal chemistry and thermoelectric properties of Gd<sub>2</sub>Te<sub>3</sub>, J Appl Crystallogr 20, 102-104 (1987).
cited as the source of values for this phase

GD2TE5 (Gd–Te)

Id: phase:gd-te:gd2te5; status assigned
Structure: Nd2Te5 · oC28 · Cmcm (63); type st:nd2te5-oc28; 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: Gd 0.2857, Te 0.7143
Stability: stable in 1 of 1 calculated diagram(s): 300–1191.68 K, x(Te) 0.71429–0.71429
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:gd2te5
paper: paper:10.1007/s11669-023-01051-1:Gd2Te5
tdb: tdb:GdTe-23Cui.tdb:GD2TE5

TDB models of GD2TE5 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GD2TE5, type code %, sha256 4411ddc5ee70cff7…

75: PHASE GD2TE5 % 2 2 5 !
76: CONST GD2TE5 : GD : TE : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports values for this phase

GD4TE7 (Gd–Te)

Id: phase:gd-te:gd4te7; status assigned
Structure: UAs2 · tP6 · P4/nmm (129); type st:uas2-tp6; 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: Gd 0.3636, Te 0.6364
Stability: stable in 1 of 1 calculated diagram(s): 300–1445.07 K, x(Te) 0.63636–0.63636
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:gd4te7
paper: paper:10.1007/s11669-023-01051-1:Gd4Te7
tdb: tdb:GdTe-23Cui.tdb:GD4TE7

TDB models of GD4TE7 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GD4TE7, type code %, sha256 4411ddc5ee70cff7…

65: PHASE GD4TE7 % 2 4 7 !
66: CONST GD4TE7 : GD : TE : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports values for this phase

GDTE_B1 (Gd–Te)

Id: phase:gd-te:gdte-b1; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stoichiometry: Gd 0.5000, Te 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–2100.31 K, x(Te) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:gd-te:gdte-b1
tdb: tdb:GdTe-23Cui.tdb:GDTE_B1

TDB models of GDTE_B1 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GDTE_B1, type code %, sha256 4411ddc5ee70cff7…

55: PHASE GDTE_B1 % 2 1 1 !
56: CONST GDTE_B1 : GD : TE : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase

GDTE2 (Gd–Te)

Id: phase:gd-te:gdte2; status assigned
Structure: Fe2As · tP6 · P4/nmm (129); type st:fe2as-tp6; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Gd 0.3333, Te 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1271.99 K, x(Te) 0.66667–0.66667
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:gdte2
paper: paper:10.1007/s11669-023-01051-1:GdTe2
tdb: tdb:GdTe-23Cui.tdb:GDTE2

TDB models of GDTE2 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GDTE2, type code %, sha256 4411ddc5ee70cff7…

70: PHASE GDTE2 % 2 1 2 !
71: CONST GDTE2 : GD : TE : !

Example references (2 of 2; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports values for this phase
doi:10.1246/bcsj.45.1239 Koichi Niihara, Toetsu Shishido, Seishi Yajima, The Nonstoichiometry of Gadolinium Ditelluride, Bulletin of the Chemical Society of Japan 45, 1239-1240 (1972).
cited as the source of values for this phase

GDTE3 (Gd–Te)

Id: phase:gd-te:gdte3; status assigned
Structure: NdTe3 · oC16 · Cmcm (63); type st:ndte3-oc16; 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_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Gd 0.2500, Te 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1104.88 K, x(Te) 0.75–0.75
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:gdte3
paper: paper:10.1007/s11669-023-01051-1:GdTe3
tdb: tdb:GdTe-23Cui.tdb:GDTE3

TDB models of GDTE3 (1): PHASE and CONSTITUENT statements as written

GdTe-23Cui.tdb: GDTE3, type code %, sha256 4411ddc5ee70cff7…

80: PHASE GDTE3 % 2 1 3 !
81: CONST GDTE3 : GD : TE : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports values for this phase

HCP_A3 (Gd–Te)

Id: phase:gd-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: Gd 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–1508.16 K, x(Te) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:gd-te:hcp-a3
tdb: tdb:GdTe-23Cui.tdb:HCP_A3

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

GdTe-23Cui.tdb: HCP_A3, type code %A, sha256 4411ddc5ee70cff7…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : GD : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase

LIQUID (Gd–Te)

Id: phase:gd-te:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 718.55–2500 K, x(Te) 0–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-te:liquid
paper: paper:10.1007/s11669-023-01051-1:liquid
tdb: tdb:GdTe-23Cui.tdb:LIQUID

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

GdTe-23Cui.tdb: LIQUID, type code %, sha256 4411ddc5ee70cff7…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : GD GDTE TE : !

Example references (1 of 1; assessments first):

doi:10.1007/s11669-023-01051-1 Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023).
assessment that models this phase; reports 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}
}