V–Zn phases

8 phases (tier A 4, tier B 1, liquid 1, gas 1, needs_review 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 · V–Zn system page · Markdown · field reference

Phases of the V–Zn system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:v-zn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2183.33 K, x(Zn) 0–0.02893	2	2
FCC_A1 phase:v-zn:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
GAS phase:v-zn:gas	gas	gas	stable in 2 of 2 calculated diagram(s): 1179.8–4000 K, x(Zn) 0–1	0	2
HCP_A3 phase:v-zn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1177.01 K, x(Zn) 0.99975–1	2	2
LIQUID phase:v-zn:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 691.85–3757.28 K, x(Zn) 0–1	6	2
V4ZN5 phase:v-zn:v4zn5	V4Zn5 · tI18 · I4/mmm (139)	tier B: DFT-supported (unique MP + OQMD match)	stable in 2 of 2 calculated diagram(s): 300–943.15 K, x(Zn) 0.55556–0.55556	11	2
VZN16 phase:v-zn:vzn16		needs_review	stable in 1 of 1 calculated diagram(s): 300–700.54 K, x(Zn) 0.94118–0.94118	2	1
VZN3_L12 phase:v-zn:vzn3-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–896.13 K, x(Zn) 0.75–0.75	4	2

BCC_A2 (V–Zn)

Id: phase:v-zn: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): 300–2183.33 K, x(Zn) 0–0.02893
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:v-zn:bcc-a2
paper: paper:10.1016/j.calphad.2009.12.003:(V)
tdb: tdb:VZn-10Cha.tdb:BCC_A2, tdb:VZn-11Wu.tdb:BCC_A2

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

VZn-10Cha.tdb: BCC_A2, type code %B, sha256 d4533862db93cd15…

45: PHASE BCC_A2 %B 2 1 3 !
46: CONST BCC_A2 : V% ZN : VA : !

VZn-11Wu.tdb: BCC_A2, type code %B, sha256 8818a90f31db3069…

51: PHASE BCC_A2 %B 2 1 3 !
52: CONST BCC_A2 : V% ZN : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase

FCC_A1 (V–Zn)

Id: phase:v-zn: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:v-zn:fcc-a1
tdb: tdb:VZn-10Cha.tdb:FCC_A1, tdb:VZn-11Wu.tdb:FCC_A1

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

VZn-10Cha.tdb: FCC_A1, type code %A, sha256 d4533862db93cd15…

40: PHASE FCC_A1 %A 2 1 1 !
41: CONST FCC_A1 : V ZN : VA : !

VZn-11Wu.tdb: FCC_A1, type code %A, sha256 8818a90f31db3069…

46: PHASE FCC_A1 %A 2 1 1 !
47: CONST FCC_A1 : V ZN : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase

GAS (V–Zn)

Id: phase:v-zn:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 1179.8–4000 K, x(Zn) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:v-zn:gas
tdb: tdb:VZn-10Cha.tdb:GAS, tdb:VZn-11Wu.tdb:GAS

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

VZn-10Cha.tdb: GAS, type code %, sha256 d4533862db93cd15…

63: PHASE GAS:G % 1 1 !
64: CONST GAS:G : V ZN : !

VZn-11Wu.tdb: GAS, type code %, sha256 8818a90f31db3069…

74: PHASE GAS:G % 1 1 !
75: CONST GAS:G : V ZN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase

HCP_A3 (V–Zn)

Id: phase:v-zn:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–1177.01 K, x(Zn) 0.99975–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:v-zn:hcp-a3
paper: paper:10.1016/j.calphad.2009.12.003:(Zn)
tdb: tdb:VZn-10Cha.tdb:HCP_A3, tdb:VZn-11Wu.tdb:HCP_A3

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

VZn-10Cha.tdb: HCP_A3, type code %A, sha256 d4533862db93cd15…

50: PHASE HCP_A3 %A 2 1 0.5 !
51: CONST HCP_A3 : V ZN% : VA : !

VZn-11Wu.tdb: HCP_A3, type code %A, sha256 8818a90f31db3069…

56: PHASE HCP_A3 %A 2 1 0.5 !
57: CONST HCP_A3 : V ZN% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase

LIQUID (V–Zn)

Id: phase:v-zn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 691.85–3757.28 K, x(Zn) 0–1
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:v-zn:liquid
paper: paper:10.1016/j.calphad.2009.12.003:L
tdb: tdb:VZn-10Cha.tdb:LIQUID, tdb:VZn-11Wu.tdb:LIQUID

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

VZn-10Cha.tdb: LIQUID, type code %, sha256 d4533862db93cd15…

35: PHASE LIQUID:L % 1 1 !
36: CONST LIQUID:L : V ZN : !

VZn-11Wu.tdb: LIQUID, type code %, sha256 8818a90f31db3069…

41: PHASE LIQUID:L % 1 1 !
42: CONST LIQUID:L : V ZN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase

V4ZN5 (V–Zn)

Id: phase:v-zn:v4zn5; status assigned
Structure: V4Zn5 · tI18 · I4/mmm (139); type st:v4zn5-ti18; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: V 0.4444, Zn 0.5556
Stability: stable in 2 of 2 calculated diagram(s): 300–943.15 K, x(Zn) 0.55556–0.55556
Literature: 11 values (11 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:v-zn:v4zn5
mp: mp:mp-aaaabtrv
oqmd: oqmd:oqmd-18177
paper: paper:10.1016/j.calphad.2009.12.003:V4Zn5, paper:10.1016/j.calphad.2011.05.005:V4Zn5
tdb: tdb:VZn-10Cha.tdb:V4ZN5, tdb:VZn-11Wu.tdb:V4ZN5

TDB models of V4ZN5 (2): PHASE and CONSTITUENT statements as written

VZn-10Cha.tdb: V4ZN5, type code %, sha256 d4533862db93cd15…

55: PHASE V4ZN5 % 2 4 5 !
56: CONST V4ZN5 : V : ZN : !

VZn-11Wu.tdb: V4ZN5, type code %, sha256 8818a90f31db3069…

61: PHASE V4ZN5 % 2 4 5 !
62: CONST V4ZN5 : V : ZN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase; reports values for this phase

VZN16 (V–Zn)

Id: phase:v-zn:vzn16; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Candidate (sgte_mmc2): (VZn16) — Hallstedt 2025 mmc2 row for VZN16: VZN16
Stoichiometry: V 0.0588, Zn 0.9412
Stability: stable in 1 of 1 calculated diagram(s): 300–700.54 K, x(Zn) 0.94118–0.94118
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:v-zn:vzn16
paper: paper:10.1016/j.calphad.2011.05.005:VZn16
tdb: tdb:VZn-11Wu.tdb:VZN16

TDB models of VZN16 (1): PHASE and CONSTITUENT statements as written

VZn-11Wu.tdb: VZN16, type code %, sha256 8818a90f31db3069…

71: PHASE VZN16 % 2 1 16 !
72: CONST VZN16 : V : ZN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models this phase; reports values for this phase

VZN3_L12 (V–Zn)

Id: phase:v-zn:vzn3-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaardi and oqmd-18189, space group 221
Stoichiometry: V 0.2500, Zn 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–896.13 K, x(Zn) 0.75–0.75
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:v-zn:vzn3-l12
mp: mp:mp-aaaaardi
oqmd: oqmd:oqmd-18189
paper: paper:10.1016/j.calphad.2009.12.003:VZn3
tdb: tdb:VZn-10Cha.tdb:VZN3_L12, tdb:VZn-11Wu.tdb:VZN3_L12

TDB models of VZN3_L12 (2): PHASE and CONSTITUENT statements as written

VZn-10Cha.tdb: VZN3_L12, type code %, sha256 d4533862db93cd15…

60: PHASE VZN3_L12 % 2 1 3 !
61: CONST VZN3_L12 : V : ZN : !

VZn-11Wu.tdb: VZN3_L12, type code %, sha256 8818a90f31db3069…

66: PHASE VZN3_L12 % 2 1 3 !
67: CONST VZN3_L12 : V : ZN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2009.12.003 Keke Chang, Yong Du, Weihua Sun, Honghui Xu, LiangCai Zhou, Thermodynamic assessment of the V–Zn system supported by key experiments and first-principles calculations, Calphad 34, 75-80 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.05.005 Changjun Wu, Xuping Su, Daniel Liu, Xinming Wang, Jianhua Wang, Zhi Li et al., The V–Zn binary system: New experimental results and thermodynamic assessment, Calphad 35, 403-410 (2011).
assessment that models 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}
}