Sn–V phases

9 phases (tier A 5, liquid 1, needs_review 3); 6 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Sn–V system page · Markdown · field reference

Phases of the Sn–V system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:sn-v:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
BCT_A5 phase:sn-v:a5-bct	beta-Sn · A5 · tI4 · I4_1/amd (141)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–505.08 K, x(V) 0–0	0	2
BCC_A2 phase:sn-v:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–3999.25 K, x(V) 0.84194–1	0	2
FCC_A1 phase:sn-v:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
HCP_A3 phase:sn-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:sn-v:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 505.08–4000 K, x(V) 0–1	4	2
SN2V_CB phase:sn-v:sn2v-cb		needs_review	stable in 1 of 1 calculated diagram(s): 300–1027.42 K, x(V) 0.34–0.34	0	1
SN3V2_CB phase:sn-v:sn3v2-cb		needs_review	stable in 1 of 1 calculated diagram(s): 300–1032.2 K, x(V) 0.4–0.4	0	1
SNV3_A15 phase:sn-v:snv3-a15		needs_review	stable in 2 of 2 calculated diagram(s): 300–1871.31 K, x(V) 0.78–0.795	0	2

DIAMOND_A4 (Sn–V)

Id: phase:sn-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: Sn 1.0000
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:sn-v:a4-diamond
tdb: tdb:SnV-02Stu-LB.tdb:DIAMOND_A4, tdb:SnV-08Che.tdb:DIAMOND_A4

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

SnV-02Stu-LB.tdb: DIAMOND_A4, type code %, sha256 34ad8b6e7351ecab…

44: PHASE DIAMOND_A4 % 1 1 !
45: CONST DIAMOND_A4 : SN : !

SnV-08Che.tdb: DIAMOND_A4, type code %, sha256 8c98bca6360bcce7…

44: PHASE DIAMOND_A4 % 1 1 !
45: CONST DIAMOND_A4 : SN : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

BCT_A5 (Sn–V)

Id: phase:sn-v:a5-bct; status assigned
Structure: beta-Sn · A5 · tI4 · I4_1/amd (141); type st:a5-beta-sn-ti4; tier A: standard phase name; confidence high
Stoichiometry: Sn 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–505.08 K, x(V) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sn-v:a5-bct
tdb: tdb:SnV-02Stu-LB.tdb:BCT_A5, tdb:SnV-08Che.tdb:BCT_A5

TDB models of BCT_A5 (2): PHASE and CONSTITUENT statements as written

SnV-02Stu-LB.tdb: BCT_A5, type code %, sha256 34ad8b6e7351ecab…

49: PHASE BCT_A5 % 1 1 !
50: CONST BCT_A5 : SN : !

SnV-08Che.tdb: BCT_A5, type code %, sha256 8c98bca6360bcce7…

49: PHASE BCT_A5 % 1 1 !
50: CONST BCT_A5 : SN : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

BCC_A2 (Sn–V)

Id: phase:sn-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): 300–3999.25 K, x(V) 0.84194–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sn-v:bcc-a2
tdb: tdb:SnV-02Stu-LB.tdb:BCC_A2, tdb:SnV-08Che.tdb:BCC_A2

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

SnV-02Stu-LB.tdb: BCC_A2, type code %B, sha256 34ad8b6e7351ecab…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : SN V% : VA : !

SnV-08Che.tdb: BCC_A2, type code %B, sha256 8c98bca6360bcce7…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : SN V% : VA : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

FCC_A1 (Sn–V)

Id: phase:sn-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:sn-v:fcc-a1
tdb: tdb:SnV-02Stu-LB.tdb:FCC_A1, tdb:SnV-08Che.tdb:FCC_A1

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

SnV-02Stu-LB.tdb: FCC_A1, type code %A, sha256 34ad8b6e7351ecab…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : SN V : VA : !

SnV-08Che.tdb: FCC_A1, type code %A, sha256 8c98bca6360bcce7…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : SN V : VA : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

HCP_A3 (Sn–V)

Id: phase:sn-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:sn-v:hcp-a3
tdb: tdb:SnV-02Stu-LB.tdb:HCP_A3, tdb:SnV-08Che.tdb:HCP_A3

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

SnV-02Stu-LB.tdb: HCP_A3, type code %A, sha256 34ad8b6e7351ecab…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : SN V : VA: !

SnV-08Che.tdb: HCP_A3, type code %A, sha256 8c98bca6360bcce7…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : SN V : VA: !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

LIQUID (Sn–V)

Id: phase:sn-v:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 505.08–4000 K, x(V) 0–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:sn-v:liquid
paper: paper:10.1007/s11664-008-0530-4:Liquid, paper:10.1007/s11664-008-0530-4:liquid
tdb: tdb:SnV-02Stu-LB.tdb:LIQUID, tdb:SnV-08Che.tdb:LIQUID

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

SnV-02Stu-LB.tdb: LIQUID, type code %, sha256 34ad8b6e7351ecab…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : SN V : !

SnV-08Che.tdb: LIQUID, type code %, sha256 8c98bca6360bcce7…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : SN V : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase; reports values for this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

SN2V_CB (Sn–V)

Id: phase:sn-v:sn2v-cb; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C_b; stoichiometry_contradicts_C_b:SnV-08Che.tdb
Candidate (name_token): CuMg2 · C_b · oF48 · Fddd (70) — Strukturbericht/word 'CB' in the TDB name
Candidate (sgte_mmc2): CuMg2 · C_b · oF48 · Fddd (70) — Hallstedt 2025 mmc2 row for SN2V_CB: Sn2V
Candidate (tdb_comment): CuMg2 · oF48 · Fddd — SnV-08Che.tdb: 'Prototype CuMg2 (oF48, Fddd)'
Stoichiometry: Sn 0.6600, V 0.3400
Stability: stable in 1 of 1 calculated diagram(s): 300–1027.42 K, x(V) 0.34–0.34
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:sn-v:sn2v-cb
tdb: tdb:SnV-08Che.tdb:SN2V_CB

TDB models of SN2V_CB (1): PHASE and CONSTITUENT statements as written

SnV-08Che.tdb: SN2V_CB, type code %, sha256 8c98bca6360bcce7…

54: PHASE SN2V_CB %  2 0.66 0.34 !
55: CONST SN2V_CB : SN : V : !

Example references (1 of 1; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase

SN3V2_CB (Sn–V)

Id: phase:sn-v:sn3v2-cb; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C_b; stoichiometry_contradicts_C_b:SnV-02Stu-LB.tdb
Candidate (name_token): CuMg2 · C_b · oF48 · Fddd (70) — Strukturbericht/word 'CB' in the TDB name
Candidate (sgte_mmc2): CuMg2 · C_b · oF48 · Fddd (70) — Hallstedt 2025 mmc2 row for SN3V2_CB: Sn3V2
Candidate (tdb_comment): CuMg2 · oF48 · Fddd — SnV-02Stu-LB.tdb: 'Prototype CuMg2 (oF48, Fddd)'
Stoichiometry: Sn 0.6000, V 0.4000
Stability: stable in 1 of 1 calculated diagram(s): 300–1032.2 K, x(V) 0.4–0.4
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:sn-v:sn3v2-cb
tdb: tdb:SnV-02Stu-LB.tdb:SN3V2_CB

TDB models of SN3V2_CB (1): PHASE and CONSTITUENT statements as written

SnV-02Stu-LB.tdb: SN3V2_CB, type code %, sha256 34ad8b6e7351ecab…

54: PHASE SN3V2_CB %  2 3 2 !
55: CONST SN3V2_CB : SN : V : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
assessment that models this phase

SNV3_A15 (Sn–V)

Id: phase:sn-v:snv3-a15; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; stoichiometry_contradicts_A15:SnV-02Stu-LB.tdb; stoichiometry_contradicts_A15:SnV-08Che.tdb
Candidate (name_token): Cr3Si · A15 · cP8 · Pm-3n (223) — Strukturbericht/word 'A15' in the TDB name
Candidate (sgte_mmc2): Cr3Si · A15 · cP8 · Pm-3n (223) — Hallstedt 2025 mmc2 row for SNV3_A15: SnV3
Candidate (tdb_comment): Cr3Si · cP8 · Pm-3n — SnV-02Stu-LB.tdb: 'Prototype Cr3Si (cP8, Pm-3n)'
Candidate (tdb_comment): Cr3Si · cP8 · Pm-3n — SnV-08Che.tdb: 'Prototype Cr3Si (cP8, Pm-3n)'
Stability: stable in 2 of 2 calculated diagram(s): 300–1871.31 K, x(V) 0.78–0.795
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sn-v:snv3-a15
tdb: tdb:SnV-02Stu-LB.tdb:SNV3_A15, tdb:SnV-08Che.tdb:SNV3_A15

TDB models of SNV3_A15 (2): PHASE and CONSTITUENT statements as written

SnV-02Stu-LB.tdb: SNV3_A15, type code %, sha256 34ad8b6e7351ecab…

59: PHASE SNV3_A15 %  2 0.41 1.59 !
60: CONST SNV3_A15 : SN : V : !

SnV-08Che.tdb: SNV3_A15, type code %, sha256 8c98bca6360bcce7…

59: PHASE SNV3_A15 %  2 0.22 0.78 !
60: CONST SNV3_A15 : SN : V : !

Example references (2 of 2; assessments first):

doi:10.1007/s11664-008-0530-4 Chih-Chi Chen, Wojcieh Gierlotka, Sinn-Wen Chen, Phase Equilibria of the Sn-V System and Interfacial Reactions in Sn/V Couples, Journal of Elec Materi 37, 1727-1733 (2008).
assessment that models this phase
doi:10.3139/ijmr-2002-0009 T. Studnitzky, B. Onderka, R. Schmid-Fetzer, Z. Metallkd., 93, 48-57(2002).
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}
}