Ge–V phases

9 phases (tier A 6, tier C 2, liquid 1); 7 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 · Ge–V system page · Markdown · field reference

Phases of the Ge–V system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:ge-v:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1211.4 K, x(V) 0–0	4	2
BCC_A2 phase:ge-v:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–3999.83 K, x(V) 0.95323–1	6	2
FCC_A1 phase:ge-v:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
GE31V17 phase:ge-v:ge31v17	Ge31V17 · tP192 · P-4n2 (118)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1233.33 K, x(V) 0.35417–0.35417	8	2
GE3V5_D8M phase:ge-v:ge3v5-d8m	W5Si3 · D8_m · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2234 K, x(V) 0.625–0.625	12	2
GE8V11 phase:ge-v:ge8v11	Cr11Ge8 · oP76 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1894.8 K, x(V) 0.57895–0.57895	8	2
GEV3_A15 phase:ge-v:gev3-a15	Cr3Si · A15 · cP8 · Pm-3n (223)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2193.04 K, x(V) 0.75–0.75	12	2
HCP_A3 phase:ge-v:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
LIQUID phase:ge-v:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 1200.82–4000 K, x(V) 0–1	30	2

DIAMOND_A4 (Ge–V)

Id: phase:ge-v:a4-diamond; status assigned
Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type st:a4-c-diamond-cf8; tier A: standard phase name; confidence high
Stoichiometry: Ge 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–1211.4 K, x(V) 0–0
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ge-v:a4-diamond, corpus:phase:ge-v:diamond-a4
paper: paper:10.1016/j.intermet.2008.01.002:(Ge), paper:10.1016/j.tca.2010.11.018:Ge
tdb: tdb:GeV-08Wan.tdb:DIAMOND_A4, tdb:GeV-11Yua.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: DIAMOND_A4, type code %, sha256 e22a7c5ff3693ca3…

42: PHASE DIAMOND_A4 % 1 1 !
43: CONST DIAMOND_A4 : GE : !

GeV-11Yua.tdb: DIAMOND_A4, type code %, sha256 b27275b455d680ff…

42: PHASE DIAMOND_A4 % 1 1 !
43: CONST DIAMOND_A4 : GE : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

BCC_A2 (Ge–V)

Id: phase:ge-v:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–3999.83 K, x(V) 0.95323–1
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-v:bcc-a2
paper: paper:10.1016/j.intermet.2008.01.002:(V), paper:10.1016/j.tca.2010.11.018:(V)
tdb: tdb:GeV-08Wan.tdb:BCC_A2, tdb:GeV-11Yua.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: BCC_A2, type code %B, sha256 e22a7c5ff3693ca3…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : GE V% : VA : !

GeV-11Yua.tdb: BCC_A2, type code %B, sha256 b27275b455d680ff…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : GE V% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

FCC_A1 (Ge–V)

Id: phase:ge-v:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-v:fcc-a1
tdb: tdb:GeV-08Wan.tdb:FCC_A1, tdb:GeV-11Yua.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: FCC_A1, type code %A, sha256 e22a7c5ff3693ca3…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : GE V : VA : !

GeV-11Yua.tdb: FCC_A1, type code %A, sha256 b27275b455d680ff…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : GE V : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase

GE31V17 (Ge–V)

Id: phase:ge-v:ge31v17; status assigned
Structure: Ge31V17 · tP192 · P-4n2 (118); type st:ge31v17-tp192; 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: Ge 0.6458, V 0.3542
Stability: stable in 2 of 2 calculated diagram(s): 300–1233.33 K, x(V) 0.35417–0.35417
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-v:ge31v17
paper: paper:10.1016/j.intermet.2008.01.002:V17Ge31, paper:10.1016/j.tca.2010.11.018:V17Ge31
tdb: tdb:GeV-08Wan.tdb:GE31V17, tdb:GeV-11Yua.tdb:GE31V17

TDB models of GE31V17 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: GE31V17, type code %, sha256 e22a7c5ff3693ca3…

47: PHASE GE31V17 % 2 31 17 !
48: CONST GE31V17 : GE : V : !

GeV-11Yua.tdb: GE31V17, type code %, sha256 b27275b455d680ff…

47: PHASE GE31V17 % 2 31 17 !
48: CONST GE31V17 : GE : V : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

GE3V5_D8M (Ge–V)

Id: phase:ge-v:ge3v5-d8m; status assigned
Structure: W5Si3 · D8_m · tI32 · I4/mcm (140); type st:d8-m-w5si3-ti32; tier A: standard phase name; confidence high
Stoichiometry: Ge 0.3750, V 0.6250
Stability: stable in 2 of 2 calculated diagram(s): 300–2234 K, x(V) 0.625–0.625
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-v:ge3v5-d8m
paper: paper:10.1016/j.intermet.2008.01.002:V5Ge3, paper:10.1016/j.tca.2010.11.018:V5Ge3
tdb: tdb:GeV-08Wan.tdb:GE3V5_D8M, tdb:GeV-11Yua.tdb:GE3V5_D8M

TDB models of GE3V5_D8M (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: GE3V5_D8M, type code %, sha256 e22a7c5ff3693ca3…

58: PHASE GE3V5_D8M % 2 3 5 !
59: CONST GE3V5_D8M : GE : V : !

GeV-11Yua.tdb: GE3V5_D8M, type code %, sha256 b27275b455d680ff…

58: PHASE GE3V5_D8M % 2 3 5 !
59: CONST GE3V5_D8M : GE : V : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

GE8V11 (Ge–V)

Id: phase:ge-v:ge8v11; status assigned
Structure: Cr11Ge8 · oP76 · Pnma (62); type st:cr11ge8-op76; 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: Ge 0.4211, V 0.5789
Stability: stable in 2 of 2 calculated diagram(s): 300–1894.8 K, x(V) 0.57895–0.57895
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-v:ge8v11
paper: paper:10.1016/j.intermet.2008.01.002:V11Ge8, paper:10.1016/j.tca.2010.11.018:V11Ge8
tdb: tdb:GeV-08Wan.tdb:GE8V11, tdb:GeV-11Yua.tdb:GE8V11

TDB models of GE8V11 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: GE8V11, type code %, sha256 e22a7c5ff3693ca3…

52: PHASE GE8V11 % 2 8 11 !
53: CONST GE8V11 : GE : V : !

GeV-11Yua.tdb: GE8V11, type code %, sha256 b27275b455d680ff…

52: PHASE GE8V11 % 2 8 11 !
53: CONST GE8V11 : GE : V : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

GEV3_A15 (Ge–V)

Id: phase:ge-v:gev3-a15; status assigned
Structure: Cr3Si · A15 · cP8 · Pm-3n (223); type st:a15-cr3si-cp8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabuz and oqmd-3829, space group 223
Stoichiometry: Ge 0.2500, V 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–2193.04 K, x(V) 0.75–0.75
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ge-v:gev3-a15
mp: mp:mp-aaaaabuz
oqmd: oqmd:oqmd-3829
paper: paper:10.1016/j.intermet.2008.01.002:V3Ge, paper:10.1016/j.tca.2010.11.018:V3Ge
tdb: tdb:GeV-08Wan.tdb:GEV3_A15, tdb:GeV-11Yua.tdb:GEV3_A15

TDB models of GEV3_A15 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: GEV3_A15, type code %, sha256 e22a7c5ff3693ca3…

63: PHASE GEV3_A15 % 2 1 3 !
64: CONST GEV3_A15 : GE : V : !

GeV-11Yua.tdb: GEV3_A15, type code %, sha256 b27275b455d680ff…

63: PHASE GEV3_A15 % 2 1 3 !
64: CONST GEV3_A15 : GE : V : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase; reports values for this phase

HCP_A3 (Ge–V)

Id: phase:ge-v:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-v:hcp-a3
tdb: tdb:GeV-08Wan.tdb:HCP_A3, tdb:GeV-11Yua.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

GeV-08Wan.tdb: HCP_A3, type code %, sha256 e22a7c5ff3693ca3…

37: PHASE HCP_A3 % 2 1 0.5 !
38: CONST HCP_A3 : GE V : VA : !

GeV-11Yua.tdb: HCP_A3, type code %, sha256 b27275b455d680ff…

37: PHASE HCP_A3 % 2 1 0.5 !
38: CONST HCP_A3 : GE V : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
assessment that models this phase

LIQUID (Ge–V)

Id: phase:ge-v:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 1200.82–4000 K, x(V) 0–1
Literature: 30 values (30 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-v:liquid
paper: paper:10.1016/j.intermet.2008.01.002:L, paper:10.1016/j.tca.2010.11.018:L
tdb: tdb:GeV-08Wan.tdb:LIQUID, tdb:GeV-11Yua.tdb:LIQUID

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

GeV-08Wan.tdb: LIQUID, type code %, sha256 e22a7c5ff3693ca3…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : GE V : !

GeV-11Yua.tdb: LIQUID, type code %, sha256 b27275b455d680ff…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : GE V : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2008.01.002 C.P. Wang, A.Q. Zheng, X.J. Liu, Thermodynamic assessments of the V–Ge and V–Pt systems, Intermetallics 16, 544-549 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2010.11.018 Xiaoming Yuan, Weihua Sun, Yoonsung Chung, Honghui Xu, Shuhong Liu, Yong Du et al., Heat contents of the intermetallics V3Ge and V5Ge3 and thermodynamic modeling of the Ge–V system, Thermochimica Acta 513, 100-105 (2011).
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}
}