# Mn system

> Mn system: 63 accepted literature values (crystal structure 34, phase transition 15, invariant reaction 10, formation 4) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

63 accepted literature values from 14 paper(s) (experimental 6, model 35, DFT 7, unspecified 15); 0 calculated phase diagram(s).

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

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 6 |
| model | 35 |
| DFT | 7 |
| unspecified | 15 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 10 |
| phase transition | 15 |
| formation | 4 |
| crystal structure | 34 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Mn system (10)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1519.15 | congruent melting: L -> δMn | L: Mn 1; δMn: Mn 1 | model | [1] Karakaya 1990 | Table I, p. 3, row 7; `ORC-34V5AAV5UW` |  |
| 1411.15 | polymorphic: δMn -> γMn | δMn: Mn 1 | model | [1] Karakaya 1990 | Table I, p. 3, row 8; `ORC-AQEQCVGAJH` |  |
| 1410.95 | (δMn) ↔ (γMn), Liquid | (δMn): Mn 0.999; (γMn): Mn 0.867; Liquid: Mn 0.999 | model | [2] Wang 2012 | Table 2, p. 4, row 2; `ORC-H3NNNG42QG` |  |
| 1389 | δMn -> βMn + γMn | δMn: Mn 0.9973; βMn: Mn 0.9958; γMn: Mn 0.9998 | model | [3] Zhou 2012 | Table 5, p. 8, row 11; `ORC-L22E4WCB77` |  |
| 1383 | δMn -> βMn + γMn | δMn: Mn 0.995; βMn: Mn 0.983; γMn: Mn 0.997 | model | [3] Zhou 2012; _cites Okamoto 1995_ [doi](https://doi.org/10.1007/bf02645298) | Table 5, p. 8, row 12; `ORC-5ZAH7D7BOD` |  |
| 1373.15 | polymorphic: γMn -> βMn | γMn: Mn 1; βMn: Mn 1 | model | [1] Karakaya 1990 | Table I, p. 3, row 9; `ORC-M74O6D2IC2` |  |
| 1346 | peritectoid: δMn + γMn -> βMn | δMn: Mn 0.8918; γMn: Mn 0.9067; βMn: Mn 0.8981 | model | [4] Liu 1999 | Table 3, p. 8, row 46; `ORC-DLNT5HLOVS` |  |
| 1344 | peritectoid: δMn + γMn -> βMn | δMn: Mn 0.879; γMn: Mn 0.909; βMn: Mn 0.9 | model | [4] Liu 1999; _cites McAlster 1990_ | Table 3, p. 8, row 48; `ORC-LU3B2O26PE` |  |
| 1331 | peritectoid: δMn + γMn -> βMn | δMn: Mn 0.9029; γMn: Mn 0.913; βMn: Mn 0.9097 | model | [4] Liu 1999; _cites Jansson 1992_ [doi](https://doi.org/10.1007/bf02646113) | Table 3, p. 8, row 47; `ORC-AGQUJ5G6L6` |  |
| 1000.15 | polymorphic: βMn -> αMn | βMn: Mn 1; αMn: Mn 1 | model | [1] Karakaya 1990 | Table I, p. 3, row 10; `ORC-7LA6XHYBTH` |  |

## 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, Mn system (4)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| C14 Laves Mn2Mn |  | 7.826 kJ/mol-atom | 0 | DFT |  |  | [5] Zheng 2022; _cites Khan 2016_ [doi](https://doi.org/10.1039/c6cp04542a) | Table 4, p. 6, row 20; `ORC-2RVTMN57IY.116795` |  |
| C14 Laves Mn2Mn |  | 7.826 kJ/mol-atom | 298.15 | model |  |  | [5] Zheng 2022; _cites Khan 2016_ [doi](https://doi.org/10.1039/c6cp04542a) | Table 4, p. 6, row 22; `ORC-DI6UXQFWVB.e6bfe4` |  |
| C14 Laves Mn2Mn |  | 10.125 kJ/mol-atom | 298.15 | model |  |  | [5] Zheng 2022 | Table 4, p. 6, row 21; `ORC-TEV2VKRUZJ.96a814` |  |
| C14 Laves Mn2Mn |  | 10.125 kJ/mol-atom | 0 | DFT |  |  | [5] Zheng 2022 | Table 4, p. 6, row 19; `ORC-ZNJNUARKDF.bcc915` |  |

## Other properties

### Phase transition (15)

Table: Phase transition, Mn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 95 K | 95 | magnetic | experimental | [6] Huang 1989 | p. 2; `ORC-4LK2MJ6GLT` | “The a-Mn is antiferromagnetic with TN= 95 K.” |
| Phase transition | 980 K | 980 | alpha-Mn + beta-Mn | experimental | [7] Grundy 2003; _cites Fernandez 1990_ | p. 1; `ORC-7ZBCJ5JB63.90ede1` | “Manganese exists in four modifications: ␣-Mn (up to 980 K), ␤-Mn (up to 1360 K), ␥-Mn (up to 1411 K), and ␦-Mn (up to the melting temperature of 1519 K).” |
| Phase transition | 980 K | 980 | polymorphic: β-Mn -> α-Mn; _β-Mn: Mn 1; α-Mn: Mn 1_ | model | [8] Jansson 1992 | Table I, p. 3, row 17; `ORC-UVLDFFHLRK` |  |
| Phase transition | 1323 K | 1323 | congruent transformation: δMn -> γMn; _δMn: Mn 0.9505; γMn: Mn 0.9505_ | model | [4] Liu 1999 | Table 3, p. 9, row 6; `ORC-KPE5MNCJGC` |  |
| Phase transition | 1327 K | 1327 | congruent transformation: δMn -> γMn; _δMn: Mn 0.9425; γMn: Mn 0.9425_ | model | [4] Liu 1999; _cites Jansson 1992_ [doi](https://doi.org/10.1007/bf02646113) | Table 3, p. 9, row 7; `ORC-23AJB5A7R6` |  |
| Phase transition | 1328 K | 1328 | congruent transformation: δMn -> γMn; _δMn: Mn 0.94; γMn: Mn 0.94_ | model | [4] Liu 1999; _cites McAlster 1990_ | Table 3, p. 9, row 8; `ORC-USKO7GKZFI` |  |
| Phase transition | 1360 K | 1360 | beta-Mn + gamma-Mn | experimental | [7] Grundy 2003; _cites Fernandez 1990_ | p. 1; `ORC-7ZBCJ5JB63.9687d4` | “Manganese exists in four modifications: ␣-Mn (up to 980 K), ␤-Mn (up to 1360 K), ␥-Mn (up to 1411 K), and ␦-Mn (up to the melting temperature of 1519 K).” |
| Phase transition | 1360 K | 1360 | congruent transformation: Fcc -> β-Mn; _Fcc: Mn 1; β-Mn: Mn 1_ | model | [8] Jansson 1992 | Table I, p. 3, row 16; `ORC-3WJ2QT2OWX` |  |
| Phase transition | 1360.15 K | 1360.15 | polymorphic: γMn -> βMn; _γMn: ; βMn: _ | model | [9] Wang 2009 | Table 5, p. 5, row 4; `ORC-4GRDV7RFJZ` |  |
| Phase transition | 1373.15 K | 1373.15 | polymorphic: γMn -> βMn; _γMn: ; βMn: _ | experimental | [9] Wang 2009; _cites Massalski 1990_ | Table 5, p. 5, row 3; `ORC-E7KY74SQNF` |  |
| Phase transition | 1405.15 K | 1405.15 | polymorphic: δMn -> γMn; _δMn: _ | model | [9] Wang 2009 | Table 5, p. 5, row 2; `ORC-3XVMENQEPE` |  |
| Phase transition | 1411 K | 1411 | gamma-Mn + delta-Mn | experimental | [7] Grundy 2003; _cites Fernandez 1990_ | p. 1; `ORC-7ZBCJ5JB63.9b7eb9` | “Manganese exists in four modifications: ␣-Mn (up to 980 K), ␤-Mn (up to 1360 K), ␥-Mn (up to 1411 K), and ␦-Mn (up to the melting temperature of 1519 K).” |
| Phase transition | 1411 K | 1411 | polymorphic: Bcc -> fcc; _Bcc: Mn 1; fcc: Mn 1_ | model | [8] Jansson 1992 | Table I, p. 3, row 15; `ORC-WBBN5CXRVA` |  |
| Phase transition | 1411.15 K | 1411.15 | polymorphic: δMn -> γMn; _δMn: _ | experimental | [9] Wang 2009; _cites Massalski 1990_ | Table 5, p. 5, row 1; `ORC-OOMLSSHQBB` |  |
| Phase transition | 1519 K | 1519 | congruent melting: Liquid -> bcc; _L: Mn 1; bcc: Mn 1_ | model | [8] Jansson 1992 | Table I, p. 3, row 14; `ORC-EL32L2IMIK` |  |

### Crystal structure (34)

Table: Crystal structure, Mn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 3.502 Å |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012; _cites Wang 2004_ [doi](https://doi.org/10.1016/j.calphad.2004.05.002) | Table 5, p. 9, row 4; `ORC-2XOEYEDDEX.7599f2` |  |
| Lattice a | 3.496 Å |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012 | Table 5, p. 9, row 3; `ORC-5SRNIG5XLE.35d24b` |  |
| Lattice a | 3.55 Å |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012 | Table 5, p. 9, row 5; `ORC-KHHDSJ6IKS.7e53e1` |  |
| Lattice a | 4.547 Å | 0 | C14; _alloy: Mn 1_ | DFT | [10] Liu 2012 | Table 4, p. 8, row 7; `ORC-5GPIGU4FR3.e0fa5d` |  |
| Lattice a | 8.9139 Å | 298.15 | (αMn); _alloy: Mn 1_ | model | [11] Sun 2010; _cites Liao 1986_ [doi](https://doi.org/10.1007/bf02869863) | Table 1, p. 2, row 5; `ORC-CE2LY22UA6` |  |
| Lattice a | 8.9219 Å | 298.15 | (αMn); _alloy: Mn 1_ | model | [12] Qin 2014; _cites King 1981_ | Table 2, p. 3, row 5; `ORC-FGXV4C6HT5` |  |
| Lattice a | 8.914 Å | 298.15 | (αMn); _alloy: Mn 1_ | unspecified | [13] Long 2018; _cites Berche 2014_ [doi](https://doi.org/10.1016/j.jallcom.2014.06.202) | Table 1, p. 2, row 7; `ORC-K7GUESHLSQ` |  |
| Lattice a | 6.314 Å | 298.15 | (βMn); _alloy: Mn 1_ | unspecified | [13] Long 2018; _cites Berche 2014_ [doi](https://doi.org/10.1016/j.jallcom.2014.06.202) | Table 1, p. 2, row 8; `ORC-3RURIJQKFX` |  |
| Lattice a | 6.3152 Å | 298.15 | (βMn); _alloy: Mn 1_ | model | [12] Qin 2014; _cites Gokcen 1989_ [doi](https://doi.org/10.1007/bf02877580) | Table 2, p. 3, row 6; `ORC-7GDKG2QIAI` |  |
| Lattice a | 6.3152 Å | 298.15 | (βMn); _alloy: Mn 1_ | model | [11] Sun 2010; _cites Liao 1986_ [doi](https://doi.org/10.1007/bf02869863) | Table 1, p. 2, row 4; `ORC-YNBJ2VFFCS` |  |
| Lattice a | 3.8624 Å | 298.15 | (γMn); _alloy: Mn 1_ | model | [11] Sun 2010; _cites Liao 1986_ [doi](https://doi.org/10.1007/bf02869863) | Table 1, p. 2, row 3; `ORC-LLAVNBQIZP` |  |
| Lattice a | 5.72 Å | 298.15 | (γMn); _alloy: Mn 1_ | unspecified | [13] Long 2018; _cites Berche 2014_ [doi](https://doi.org/10.1016/j.jallcom.2014.06.202) | Table 1, p. 2, row 9; `ORC-MMT3OJFLAI` |  |
| Lattice a | 3.86 Å | 298.15 | (γMn); _alloy: Mn 1_ | model | [12] Qin 2014; _cites Gokcen 1989_ [doi](https://doi.org/10.1007/bf02877580) | Table 2, p. 3, row 7; `ORC-N74TBLJAAH` |  |
| Lattice a | 3.08 Å | 298.15 | (δMn); _alloy: Mn 1_ | model | [12] Qin 2014; _cites Gokcen 1989_ [doi](https://doi.org/10.1007/bf02877580) | Table 2, p. 3, row 8; `ORC-3GEBPS7KDF` |  |
| Lattice a | 3.0806 Å | 298.15 | (δMn); _alloy: Mn 1_ | model | [11] Sun 2010; _cites Liao 1986_ [doi](https://doi.org/10.1007/bf02869863) | Table 1, p. 2, row 2; `ORC-SMVXHKMYBF` |  |
| Lattice a | 8.9219 Å | 298.15 | αMn; _αMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 9; `ORC-BAKXP75JFB.fdaae6` |  |
| Lattice a | 6.3152 Å | 298.15 | βMn; _βMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 10; `ORC-L4HFQQEL6M.b9c764` |  |
| Lattice a | 3.86624 Å | 298.15 | γMn; _γMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 11; `ORC-IFYUQ5H5GR.a163f5` |  |
| Lattice a | 3.0806 Å | 298.15 | δMn; _δMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 12; `ORC-NPDXVCVPMB.93ccdf` |  |
| Lattice a | 8.913 Å | 727 (\<) | (αMn); _alloy: Mn 1_ | unspecified | [14] Brož 2024 | Table 1, p. 3, row 12; `ORC-MNLB3O2CFS` |  |
| Lattice a | 6.315 Å | 913.5 | (βMn); _alloy: Mn 1_ | unspecified | [14] Brož 2024 | Table 1, p. 3, row 13; `ORC-5WVPYBWXZ4` |  |
| Lattice a | 3.86 Å | 1119 | UNKNOWN; _alloy: Mn 1_ | unspecified | [14] Brož 2024 | Table 1, p. 3, row 14; `ORC-RFUQ2NN5FM` |  |
| Lattice a | 3.08 Å | 1192 | (δMn); _alloy: Mn 1_ | unspecified | [14] Brož 2024 | Table 1, p. 3, row 15; `ORC-PGOCEXJD5E` |  |
| Lattice c | 7.358 Å | 0 | C14; _alloy: Mn 1_ | DFT | [10] Liu 2012 | Table 4, p. 8, row 7; `ORC-5GPIGU4FR3.8f5c52` |  |
| Lattice c | 7.357 Å | 0 | C14; _alloy: Mn 1_ | DFT | [10] Liu 2012 | Table 4, p. 8, row 9; `ORC-ET65D5MLIQ.98d3ea` |  |
| lattice unspecified axis | 8.9219 Å | 298.15 | αMn; _αMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 9; `ORC-BAKXP75JFB.73394a` |  |
| lattice unspecified axis | 6.3152 Å | 298.15 | βMn; _βMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 10; `ORC-L4HFQQEL6M.1e0d74` |  |
| lattice unspecified axis | 3.86624 Å | 298.15 | γMn; _γMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 11; `ORC-IFYUQ5H5GR.8d85c3` |  |
| lattice unspecified axis | 3.0806 Å | 298.15 | δMn; _δMn: Mn 1_ | unspecified | [1] Karakaya 1990 | Table 3, p. 5, row 12; `ORC-NPDXVCVPMB.8253bf` |  |
| lattice v0 | 43 Å3 |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012; _cites Wang 2004_ [doi](https://doi.org/10.1016/j.calphad.2004.05.002) | Table 5, p. 9, row 4; `ORC-2XOEYEDDEX.47b145` |  |
| lattice v0 | 42.7 Å3 |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012 | Table 5, p. 9, row 3; `ORC-5SRNIG5XLE.d3226e` |  |
| lattice v0 | 44.7 Å3 |  | (γMn); _alloy: Mn 1_ | model | [10] Liu 2012 | Table 5, p. 9, row 5; `ORC-KHHDSJ6IKS.de5c8f` |  |
| lattice v0 | 131.7 Å3 per formula unit | 0 | C14; _alloy: Mn 1_ | DFT | [10] Liu 2012 | Table 4, p. 8, row 7; `ORC-5GPIGU4FR3.af5ff7` |  |
| lattice v0 | 131.7 Å3 | 0 | C14; _alloy: Mn 1_ | DFT | [10] Liu 2012 | Table 4, p. 8, row 7; `ORC-5GPIGU4FR3.f7ef3c` |  |

## Sources

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

1. I. Karakaya, W. T. Thompson, The Ag-Mn (Silver-Manganese) system, Bulletin of Alloy Phase Diagrams 11, 480-486 (1990). [doi:10.1007/bf02898263](https://doi.org/10.1007/bf02898263)
2. Y. Wang, B. Hu, S. Liu, Y. Du, Thermodynamic reassessment of the La-Mn system, J min metall B Metall 48, 391-394 (2012). [doi:10.2298/jmmb120717049w](https://doi.org/10.2298/jmmb120717049w)
3. Peng Zhou, Shuhong Liu, Peisheng Wang, Honghui Xu, Yingbiao Peng, Xiaoming Yuan et al., Experimental Investigation and Thermodynamic Assessment of the Hf-Mn System, J. Phase Equilib. Diffus. 33, 20-28 (2012). [doi:10.1007/s11669-011-9976-9](https://doi.org/10.1007/s11669-011-9976-9)
4. X. J. Liu, I. Ohnuma, R. Kainuma, K. Ishida, Thermodynamic assessment of the Aluminum-Manganese (Al-Mn) binary phase diagram, JPE 20, 45-56 (1999). [doi:10.1361/105497199770335938](https://doi.org/10.1361/105497199770335938)
5. Weisen Zheng, Wei Song, Tong Wu, Jingya Wang, Yanlin He, Xiao-Gang Lu, Experimental investigation and thermodynamic modeling of the ternary Ti–Fe–Mn system for hydrogen storage applications, Journal of Alloys and Compounds 891, 161957 (2022). [doi:10.1016/j.jallcom.2021.161957](https://doi.org/10.1016/j.jallcom.2021.161957)
6. Weiming Huang, An Assessment of the Co-Mn System, Calphad 13, 231-242 (1989). [doi:10.1016/0364-5916(89)90003-5](https://doi.org/10.1016/0364-5916%2889%2990003-5)
7. A. Nicholas Grundy, Bengt Hallstedt, Ludwig J. Gauckler, Assessment of the Mn-O system, JPE 24, 21-39 (2003). [doi:10.1007/s11669-003-0004-6](https://doi.org/10.1007/s11669-003-0004-6)
8. Åke Jansson, A thermodynamic evaluation of the Al-Mn system, Metall Trans A 23, 2953-2962 (1992). [doi:10.1007/bf02646113](https://doi.org/10.1007/bf02646113)
9. C.P. Wang, Z. Lin, X.J. Liu, Thermodynamic assessments of the Dy–Mn and Mn–Pr systems, Journal of Alloys and Compounds 469, 123-128 (2009). [doi:10.1016/j.jallcom.2008.01.092](https://doi.org/10.1016/j.jallcom.2008.01.092)
10. Shuhong Liu, Bengt Hallstedt, Denis Music, Yong Du, Ab initio calculations and thermodynamic modeling for the Fe–Mn–Nb system, Calphad 38, 43-58 (2012). [doi:10.1016/j.calphad.2012.03.004](https://doi.org/10.1016/j.calphad.2012.03.004)
11. Weihua Sun, Yong Du, Shuhong Liu, Baiyun Huang, Chao Jiang, Thermodynamic Assessment of the Mn-B System, J. Phase Equilib. Diffus. 31, 357-364 (2010). [doi:10.1007/s11669-010-9740-6](https://doi.org/10.1007/s11669-010-9740-6)
12. Aning Qin, Rong Wang, Yaru Wang, Jiong Wang, Shuhong Liu, Kaiming Cheng et al., Thermodynamic assessment of the Cd–X (X=Sn, Mn, Fe) systems, Calphad 47, 83-91 (2014). [doi:10.1016/j.calphad.2014.06.006](https://doi.org/10.1016/j.calphad.2014.06.006)
13. Zhaohui Long, Xiaorong Dai, Zhi Li, Fucheng Yin, Zhanpeng Jin, Experimental investigation and thermodynamic description of the Li–Si–Mn ternary system, Journal of Alloys and Compounds 768, 686-696 (2018). [doi:10.1016/j.jallcom.2018.07.211](https://doi.org/10.1016/j.jallcom.2018.07.211)
14. Pavel Brož, Xinlin Yan, Vitaliy Romaka, Olga Fabrichnaya, Mario J. Kriegel, Vilma Buršíková et al., Constitution, physical properties and thermodynamic modeling of the Hf-Mn system, Journal of Alloys and Compounds 976, 173060 (2024). [doi:10.1016/j.jallcom.2023.173060](https://doi.org/10.1016/j.jallcom.2023.173060)

## 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/).