# V system

> V system: 96 accepted literature values (heat capacity / entropy / enthalpy 54, crystal structure 35, formation 3, activity / EMF / Gibbs energy 2) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/V.html · Markdown: https://data.orchid-project.org/systems/V.md

96 accepted literature values from 11 paper(s) (experimental 16, model 38, DFT 27, unspecified 15); 0 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/V.json) · [CSV](https://data.orchid-project.org/systems/V.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#V) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/V.html) · [Markdown](https://data.orchid-project.org/systems/V.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 16 |
| model | 38 |
| DFT | 27 |
| unspecified | 15 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| phase transition | 1 |
| formation | 3 |
| heat capacity / entropy / enthalpy | 54 |
| activity / EMF / Gibbs energy | 2 |
| crystal structure | 35 |
| other property | 1 |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, V system (3)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| V3V |  | 5 kJ/mol-atom | 0 | model |  |  | [1] Broz 2013; _cites Zhang 2008_ [doi](https://doi.org/10.1016/j.calphad.2007.12.005) | Table 2, p. 6, row 7; `ORC-7MH4EHNIFB.a837b4` |  |
| V3V |  | 5.3 kJ/mol-atom | 0 | unspecified |  |  | [1] Broz 2013 | Table 2, p. 6, row 6; `ORC-CIA4HO4QC5.00aac2` |  |
| sigma |  | 3.686 kJ/mol-atom | 0 | DFT |  |  | [2] Tonyali 2024 | Table 4, p. 5, row 27; `ORC-HWC6EJEP2O` |  |

## Other properties

### Phase transition (1)

Table: Phase transition, V system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 2223.15 K | 2223.15 | V | model | [3] Smith 1985 | p. 1; `ORC-I4VQOTTHW5.7c8046` | “In comparison, the Svechnikov d i a g r a m placed the monotectic reaction at - 1 9 0 0 ~ but had the melting point of V at the r a t h e r high value of 1950 ~” |

### Heat capacity / entropy / enthalpy (54)

Table: Heat capacity / entropy / enthalpy, V system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy; _printed: S°(298.15 K)_ | 29.64 J/mol (basis unstated)/K | 298.15 | V | model | [4] Hu 2020; _cites Arblaster 2017_ [doi](https://doi.org/10.1007/s11669-016-0514-7) | Table 7, p. 7, row 18; `ORC-34HK4RKLN5.771c3d` |  |
| Entropy; _printed: S°(298.15 K)_ | 28.67 J/mol (basis unstated)/K | 298.15 | V | model | [4] Hu 2020; _cites Glushko 1982_ | Table 7, p. 7, row 14; `ORC-AMU4MES3AF.10a77b` |  |
| Entropy; _printed: S°(298.15 K)_ | 29.708 J/mol (basis unstated)/K ± 0.08 | 298.15 | V | model | [4] Hu 2020; _cites Desai 1986_ [doi](https://doi.org/10.1007/bf00503812) | Table 7, p. 7, row 17; `ORC-AXPPYSSAPO.64b67f` |  |
| Entropy; _printed: S°(298.15 K)_ | 30.89 J/mol (basis unstated)/K | 298.15 | V | model | [4] Hu 2020; _cites Dinsdale 1991_ [doi](https://doi.org/10.1016/0364-5916%2891%2990030-n) | Table 7, p. 7, row 19; `ORC-B36MPVXP5H.a1aea9` |  |
| Entropy; _printed: S°(298.15 K)_ | 30.89 J/mol (basis unstated)/K ± 0.3 | 298.15 | V | model | [4] Hu 2020; _cites Smith 1981_ | Table 7, p. 7, row 15; `ORC-CZIIW5I7BP.05b63d` |  |
| Entropy; _printed: S°(298.15 K)_ | 29.85 J/mol (basis unstated)/K | 298.15 | V | model | [4] Hu 2020 | Table 7, p. 7, row 20; `ORC-FOKG2X5JLH.6b084c` |  |
| Entropy; _printed: S°(298.15 K)_ | 28.936 J/mol (basis unstated)/K ± 0.42 | 298.15 | V | model | [4] Hu 2020; _cites and Desai \[35\] 1941_ | Table 7, p. 7, row 16; `ORC-MQPH4GX5GT.27e48f` |  |
| Entropy; _printed: S°(298.15 K)_ | 28.911 J/mol (basis unstated)/K ± 0.4 | 298.15 | V | model | [4] Hu 2020; _cites Hultgren 1973_ | Table 7, p. 7, row 13; `ORC-YX2X7ITXGF.998416` |  |
| Heat capacity; _printed: γ_ | 9.9 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Junod 1970_ | Table 6, p. 6, row 12; `ORC-2MLFLIPQYK` |  |
| Heat capacity; _printed: γ_ | 9.26 mJ/(mol⋅K) |  | bcc | unspecified | [4] Hu 2020; _cites Corak 2020_ | Table 6, p. 6, row 5; `ORC-4DRIXPJG5R` |  |
| Heat capacity; _printed: γ_ | 8.996 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Worley 1955_ [doi](https://doi.org/10.1103/physrev.99.447) | Table 6, p. 6, row 4; `ORC-6SPSLTDR6N` |  |
| Heat capacity; _printed: γ_ | 9.45 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Corsan 1970_ [doi](https://doi.org/10.1002/pssb.19700400225) | Table 6, p. 6, row 13; `ORC-7XOKT6F7JP` |  |
| Heat capacity; _printed: γ_ | 9.6 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Pan 1977_ | Table 6, p. 6, row 19; `ORC-ASMMASDDDU` |  |
| Heat capacity; _printed: γ_ | 9.8 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Chernoplekov 1973_ | Table 6, p. 6, row 15; `ORC-BCDLSP5YQT` |  |
| Heat capacity; _printed: γ_ | 9.67 mJ/(mol⋅K) |  | bcc | unspecified | [4] Hu 2020; _cites Arblaster 2017_ [doi](https://doi.org/10.1007/s11669-016-0514-7) | Table 6, p. 6, row 26; `ORC-BF7U62TYGF` |  |
| Heat capacity; _printed: γ_ | 9.47 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Ohlendorf 1979_ [doi](https://doi.org/10.1016/0022-3697%2879%2990154-9) | Table 6, p. 6, row 20; `ORC-CEPAZ4OUEX` |  |
| Heat capacity; _printed: γ_ | 9.26 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Kittel 1996_ | Table 6, p. 6, row 24; `ORC-CVVGPT475G` |  |
| Heat capacity; _printed: γ_ | 8.87 mJ/(mol⋅K) |  | bcc | unspecified | [4] Hu 2020; _cites Cheng 1962_ | Table 6, p. 6, row 6; `ORC-EF6SB2KGDQ` |  |
| Heat capacity; _printed: γ_ | 9.75 mJ/(mol⋅K) ± 0.3 |  | bcc | unspecified | [4] Hu 2020; _cites Desai 1986_ [doi](https://doi.org/10.1007/bf00503812) | Table 6, p. 6, row 25; `ORC-J5SIF2XZVL` |  |
| Heat capacity; _printed: γ_ | 8.8 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Vergara 1984_ [doi](https://doi.org/10.1016/0022-3697%2884%2990028-3) | Table 6, p. 6, row 21; `ORC-MNBGCAOANO` |  |
| Heat capacity; _printed: γ_ | 9.669 mJ/(mol⋅K) |  | bcc | unspecified | [4] Hu 2020; _cites Li 2007_ [doi](https://doi.org/10.1007/s11434-007-0471-y) | Table 6, p. 6, row 27; `ORC-NES2QY46XQ` |  |
| Heat capacity; _printed: γ_ | 9.26 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Tomilo 1986_ [doi](https://doi.org/10.1007/bf00871199) | Table 6, p. 6, row 28; `ORC-P6V2YPGSRU` |  |
| Heat capacity; _printed: γ_ | 9.64 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Shen 1965_ | Table 6, p. 6, row 2; `ORC-POBUIBBMWI` |  |
| Heat capacity; _printed: γ_ | 10.4 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Kumagai 1974_ [doi](https://doi.org/10.1143/jpsj.37.384) | Table 6, p. 6, row 17; `ORC-RKR4RI6CDT` |  |
| Heat capacity; _printed: γ_ | 8.996 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Corak 1954_ [doi](https://doi.org/10.1103/physrev.96.1442.2) | Table 6, p. 6, row 3; `ORC-TG5GSF26HP` |  |
| Heat capacity; _printed: γ_ | 9.63 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Ishikawa 1971_ | Table 6, p. 6, row 14; `ORC-VGZ43RUSDM` |  |
| Heat capacity; _printed: γ_ | 9.67 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Leupold 1977_ [doi](https://doi.org/10.1007/bf00668217) | Table 6, p. 6, row 18; `ORC-WJCQRPYY4J` |  |
| Heat capacity; _printed: γ_ | 9.247 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites E 1964_ | Table 6, p. 6, row 9; `ORC-WW7Q5JGQ46` |  |
| Heat capacity; _printed: γ_ | 9.92 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Keesom 1964_ [doi](https://doi.org/10.1103/physrevlett.13.685) | Table 6, p. 6, row 8; `ORC-X3GZ5ZHLNX` |  |
| Heat capacity; _printed: γ_ | 3.91 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020 | Table 6, p. 6, row 32; `ORC-YKEBRNS6BL` |  |
| Heat capacity; _printed: γ_ | 9.9 mJ/(mol⋅K) |  | bcc | model | [4] Hu 2020; _cites Heiniger 1966_ | Table 6, p. 6, row 11; `ORC-Z63OD6AQNP` |  |
| Heat capacity; _printed: γ_ | 9.82 mJ/(mol⋅K) |  | bcc | experimental | [4] Hu 2020; _cites Radebaugh 1966_ [doi](https://doi.org/10.1103/physrev.149.209) | Table 6, p. 6, row 10; `ORC-ZY7Y5Z632B` |  |
| Heat capacity; _printed: γ_ | 2.36 mJ/(mol⋅K) |  | fcc | model | [4] Hu 2020 | Table 6, p. 6, row 38; `ORC-V7DHPETZNJ` |  |
| Heat capacity; _printed: γ_ | 9.711 mJ/(mol⋅K) |  | fcc | unspecified | [4] Hu 2020; _cites Li 2007_ [doi](https://doi.org/10.1007/s11434-007-0471-y) | Table 6, p. 6, row 36; `ORC-XY2EW5XC6W` |  |
| Heat capacity; _printed: γ_ | 9.889 mJ/(mol⋅K) |  | hcp | unspecified | [4] Hu 2020; _cites Li 2007_ [doi](https://doi.org/10.1007/s11434-007-0471-y) | Table 6, p. 6, row 33; `ORC-E5OYBNVE5C` |  |
| Heat capacity; _printed: γ_ | 2.89 mJ/(mol⋅K) |  | hcp | model | [4] Hu 2020 | Table 6, p. 6, row 35; `ORC-RJIZG3X2RZ` |  |
| Heat capacity; _printed: γ_ | 3.75 mJ/(mol⋅K) |  | liquid-amorphous | model | [4] Hu 2020 | Table 6, p. 6, row 43; `ORC-HO3VRAMGUC` |  |
| Heat capacity; _printed: γ_ | 9.929 mJ/(mol⋅K) |  | liquid-amorphous | unspecified | [4] Hu 2020; _cites Li 2007_ [doi](https://doi.org/10.1007/s11434-007-0471-y) | Table 6, p. 6, row 42; `ORC-TPNZORE5Q3` |  |
| Heat capacity; _printed: γ_ | 2.2 mJ/(mol⋅K) |  | ω | model | [4] Hu 2020 | Table 6, p. 6, row 40; `ORC-IOLKZGUWCW` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4678 unknown | 298.15 | V | model | [4] Hu 2020; _cites Arblaster 2017_ [doi](https://doi.org/10.1007/s11669-016-0514-7) | Table 7, p. 7, row 18; `ORC-34HK4RKLN5.8c34b5` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4580 unknown | 298.15 | V | model | [4] Hu 2020; _cites Glushko 1982_ | Table 7, p. 7, row 14; `ORC-AMU4MES3AF.124a11` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4707 unknown ± 10 | 298.15 | V | model | [4] Hu 2020; _cites Desai 1986_ [doi](https://doi.org/10.1007/bf00503812) | Table 7, p. 7, row 17; `ORC-AXPPYSSAPO.230b27` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4507 unknown | 298.15 | V | model | [4] Hu 2020; _cites Dinsdale 1991_ [doi](https://doi.org/10.1016/0364-5916%2891%2990030-n) | Table 7, p. 7, row 19; `ORC-B36MPVXP5H.7cd790` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4707 unknown ± 50 | 298.15 | V | model | [4] Hu 2020; _cites Smith 1981_ | Table 7, p. 7, row 15; `ORC-CZIIW5I7BP.0de73d` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4706 unknown | 298.15 | V | model | [4] Hu 2020 | Table 7, p. 7, row 20; `ORC-FOKG2X5JLH.181ab2` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4640 unknown | 298.15 | V | model | [4] Hu 2020; _cites and Desai \[35\] 1941_ | Table 7, p. 7, row 16; `ORC-MQPH4GX5GT.222692` |  |
| Heat content; _printed: H°(298.15 K)–H°(0 K)_ | 4640 unknown | 298.15 | V | model | [4] Hu 2020; _cites Hultgren 1973_ | Table 7, p. 7, row 13; `ORC-YX2X7ITXGF.e25224` |  |
| sm fusion; _printed: ΔfusS°_ | 7.953 unknown ± 0.335 | 2175 | V | experimental | [4] Hu 2020; _cites Treverton 1971_ [doi](https://doi.org/10.1016/s0021-9614%2871%2980029-0) | Table 7, p. 7, row 1; `ORC-4D44LG5KUX.106552` |  |
| sm fusion; _printed: ΔfusS°_ | 9.8488 unknown | 2183 | V | model | [4] Hu 2020; _cites Dinsdale 1991_ [doi](https://doi.org/10.1016/0364-5916%2891%2990030-n) | Table 7, p. 7, row 19; `ORC-B36MPVXP5H.64f334` |  |
| sm fusion; _printed: ΔfusS°_ | 9.9 unknown ± 1 | 2183 | V | model | [4] Hu 2020; _cites Smith 1981_ | Table 7, p. 7, row 15; `ORC-CZIIW5I7BP.420b7f` |  |
| sm fusion; _printed: ΔfusS°_ | 10.432 unknown | 2190 | V | model | [4] Hu 2020; _cites and Desai \[35\] 1941_ | Table 7, p. 7, row 16; `ORC-MQPH4GX5GT.585d34` |  |
| sm fusion; _printed: ΔfusS°_ | 10.4607 unknown | 2201 | V | model | [4] Hu 2020; _cites Arblaster 2017_ [doi](https://doi.org/10.1007/s11669-016-0514-7) | Table 7, p. 7, row 18; `ORC-34HK4RKLN5.059494` |  |
| sm fusion; _printed: ΔfusS°_ | 9.537 unknown ± 1.2 | 2202 | V | model | [4] Hu 2020; _cites Desai 1986_ [doi](https://doi.org/10.1007/bf00503812) | Table 7, p. 7, row 17; `ORC-AXPPYSSAPO.9e2db8` |  |
| sm fusion; _printed: ΔfusS°_ | 9.5474 unknown | 2202 | V | model | [4] Hu 2020 | Table 7, p. 7, row 20; `ORC-FOKG2X5JLH.17d9d4` |  |

### Activity / EMF / Gibbs energy (2)

Table: Activity / EMF / Gibbs energy, V system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Gibbs energy; _printed: Gm(ω)-Gm(β)_ | 12655 J/mol | 0 | UNKNOWN; _alloy: V 1_ | DFT | [5] Yan 2016 | Table 4, p. 5, row 1; `ORC-PRMUZRD2ZM` |  |
| Gibbs energy; _printed: Gm(ω)-Gm(β)_ | 8965 J/mol | 0 | UNKNOWN; _alloy: V 1_ | model | [5] Yan 2016 | Table 4, p. 5, row 2; `ORC-QGNEPI4LBC` |  |

### Crystal structure (35)

Table: Crystal structure, V system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 4.9322 Å | 0 | C14; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 3; `ORC-3LA2WUIIOQ.295623` |  |
| Lattice a | 6.8817 Å | 0 | C15; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 4; `ORC-MPERB7A4L5.0856dd` |  |
| Lattice a | 4.933 Å | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.4c5288` |  |
| Lattice a | 2.9783 Å | 0 | NM BCC V; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 1, p. 3, row 2; `ORC-4YD7HUIPP4.5509eb` |  |
| Lattice a | 0.303 Å |  | V | unspecified | [7] Chang 2010 | Table 1, p. 2, row 2; `ORC-KTHSVDAAPN` |  |
| Lattice a | 3 Å |  | bcc; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 5; `ORC-R2VXQDRNKI.852eff` |  |
| Lattice a | 2.993 Å |  | bcc; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 5; `ORC-R2VXQDRNKI.ddcf19` |  |
| Lattice a | 3.817 Å |  | fcc; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 8; `ORC-V4PWRPTZ65.1c8046` |  |
| Lattice a | 3.819 Å |  | fcc; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 8; `ORC-V4PWRPTZ65.aeed9c` |  |
| Lattice a | 2.742 Å |  | hcp; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 7; `ORC-7CXJE3QRUN.2e2816` |  |
| Lattice a | 4.256 Å |  | ω; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 6; `ORC-M5MG5AHRRJ.a26b25` |  |
| Lattice a | 3.024 Å | 298.15 | (V); _alloy: V 1_ | model | [1] Broz 2013; _cites Smith 1983_ [doi](https://doi.org/10.1007/bf02868668) | Table 1, p. 3, row 2; `ORC-LCL72QBNBW` |  |
| Lattice a | 3.0238 Å | 298.15 | (V); _(V): V 1_ | unspecified | [3] Smith 1985; _cites ref. 1_ | Table 1, p. 3, row 2; `ORC-LP3MGVAD2N` |  |
| Lattice a | 3.0309 Å | 298.15 | NM BCC V; _alloy: V 1_ | experimental | [6] Pavlů 2011; _cites Villars 1991_ | Table 1, p. 3, row 1; `ORC-N2FVXIN2HD.ffcacd` |  |
| Lattice a | 0.30271 Å | 298.15 | V | model | [7] Chang 2010; _cites Villars 1991_ | Table 1, p. 2, row 1; `ORC-BEQI2ECTXJ` |  |
| Lattice a | 3.0238 Å | 298.15 | bcc (V); _bcc (V): V 1_ | unspecified | [8] Smith 1988; _cites ref. 1_ | Table I, p. 2, row 6; `ORC-NHXQ76DFDL` |  |
| Lattice a | 3.0278 Å | 298.15 | bcc-V | unspecified | [9] Zhao 2012; _cites Finkel 1980_ | Table 1, p. 3, row 1; `ORC-5BM5SYDXC3` |  |
| Lattice a | 3.025 Å | 2182.95 (\<) | (V); _alloy: V 1_ | unspecified | [10] Cao 2013; _cites http://crystdb_ | Table 1, p. 2, row 5; `ORC-A7GF6DMFM2` |  |
| Lattice c | 7.7199 Å | 0 | C14; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 3; `ORC-3LA2WUIIOQ.832897` |  |
| Lattice c | 15.4522 Å | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.fdde5d` |  |
| Lattice c | 4.325 Å |  | hcp; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 7; `ORC-7CXJE3QRUN.a3ae14` |  |
| Lattice c | 2.631 Å |  | ω; _alloy: V 1_ | DFT | [4] Hu 2020 | Table 9, p. 9, row 6; `ORC-M5MG5AHRRJ.aff22a` |  |
| lattice c a | 1 not_printed | 0 | NM BCC V; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 1, p. 3, row 2; `ORC-4YD7HUIPP4.f4338b` |  |
| lattice c a | 1 not_printed | 298.15 | NM BCC V; _alloy: V 1_ | experimental | [6] Pavlů 2011; _cites Villars 1991_ | Table 1, p. 3, row 1; `ORC-N2FVXIN2HD.e8472e` |  |
| lattice v atom | 1.355 10^7 pm^3 | 0 | C14; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 3; `ORC-3LA2WUIIOQ.725f86` |  |
| lattice v atom | 1.358 10^7 pm^3 | 0 | C15; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 4; `ORC-MPERB7A4L5.0bef7b` |  |
| lattice v atom | 1.357 10^7 pm^3 | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.670de2` |  |
| lattice v atom | 1.321 10^7 pm^3 | 0 | NM BCC V; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 1, p. 3, row 2; `ORC-4YD7HUIPP4.fed273` |  |
| lattice v atom | 1.392 10^7 pm^3 | 298.15 | NM BCC V; _alloy: V 1_ | experimental | [6] Pavlů 2011; _cites Villars 1991_ | Table 1, p. 3, row 1; `ORC-N2FVXIN2HD.22a4b3` |  |
| site fractional coordinates |  | 0 | C14; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 3; `ORC-3LA2WUIIOQ.304fd9` |  |
| site fractional coordinates |  | 0 | C14; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 3; `ORC-3LA2WUIIOQ.87e8d9` |  |
| site fractional coordinates |  | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.7a0229` |  |
| site fractional coordinates |  | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.84e968` |  |
| site fractional coordinates |  | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.d2c406` |  |
| site fractional coordinates |  | 0 | C36; _alloy: V 1_ | DFT | [6] Pavlů 2011 | Table 2, p. 3, row 13; `ORC-7R4TJLNGHK.ef2bb6` |  |

### Other property (1)

Table: Other property, V system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Transition enthalpy; _printed: ΔH°_ | 20950 J (g at.)^-1 | 2175 | UNKNOWN; _alloy: V 1_ | unspecified | [11] Spear 1981; _cites ref. 16_ | Table 1, p. 4, row 18; `ORC-6ZHGSFOIJ4` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. P. Broz, A.U. Khan, H. Niu, X.-Q. Chen, D. Li, J. Vrestal et al., The system Ta–V–Si: Thermodynamic modeling, Journal of Solid State Chemistry 199, 171-180 (2013). [doi:10.1016/j.jssc.2012.12.003](https://doi.org/10.1016/j.jssc.2012.12.003)
2. Beril Tonyali, Hui Sun, Brandon Bocklund, John Paul Borgonia, Richard A. Otis, Shun-Li Shang et al., Additively manufactured Ni-20Cr to V functionally graded material: Computational predictions and experimental verification of phase formations, Journal of Alloys and Compounds 985, 174011 (2024). [doi:10.1016/j.jallcom.2024.174011](https://doi.org/10.1016/j.jallcom.2024.174011)
3. J. F. Smith, K. J. Lee, The In−V (Indium-Vanadium) system, Bulletin of Alloy Phase Diagrams 6, 66-68 (1985). [doi:10.1007/bf02871189](https://doi.org/10.1007/bf02871189)
4. Biao Hu, Soumya Sridar, Liangyan Hao, Wei Xiong, A new thermodynamic modeling of the Ti–V system including the metastable ω phase, Intermetallics 122, 106791 (2020). [doi:10.1016/j.intermet.2020.106791](https://doi.org/10.1016/j.intermet.2020.106791)
5. Jia-Yi Yan, G.B. Olson, Computational thermodynamics and kinetics of displacive transformations in titanium-based alloys, Journal of Alloys and Compounds 673, 441-454 (2016). [doi:10.1016/j.jallcom.2016.02.251](https://doi.org/10.1016/j.jallcom.2016.02.251)
6. J. Pavlů, J. Vřešt’ál, X.-Q. Chen, P. Rogl, Thermodynamic modeling of Laves phases in the Ta–V system: Reassessment using first-principles results, Calphad 35, 103-108 (2011). [doi:10.1016/j.calphad.2010.12.002](https://doi.org/10.1016/j.calphad.2010.12.002)
7. 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). [doi:10.1016/j.calphad.2009.12.003](https://doi.org/10.1016/j.calphad.2009.12.003)
8. J. F. Smith, K. J. Lee, The Ca−V (Calcium-Vanadium), Sr−V (strontium-Vandadium), and Ba−V (Barium-Vanadium) systems, Bulletin of Alloy Phase Diagrams 9, 466-469 (1988). [doi:10.1007/bf02881868](https://doi.org/10.1007/bf02881868)
9. Xu-Shan Zhao, Gai-Huan Yuan, Mei-Yi Yao, Qiang Yue, Jian-Yun Shen, First-principles calculations and thermodynamic modeling of the V–Zr system, Calphad 36, 163-168 (2012). [doi:10.1016/j.calphad.2011.07.003](https://doi.org/10.1016/j.calphad.2011.07.003)
10. Z. Cao, J. Xin, C. Chen, S. Liu, B. Hu, C. Tang et al., Thermodynamic modeling of the Bi-M (M = Ti, Cr, V) systems, J min metall B Metall 49, 307-313 (2013). [doi:10.2298/jmmb130127033c](https://doi.org/10.2298/jmmb130127033c)
11. K.E. Spear, J.H. Blanks, M.S. Wang, Thermodynamic modeling of the VB system, Journal of the Less Common Metals 82, 237-243 (1981). [doi:10.1016/0022-5088(81)90224-1](https://doi.org/10.1016/0022-5088%2881%2990224-1)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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).

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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).