# Ca–Mg–Sn system

> Ca–Mg–Sn system: 94 accepted literature values (phase transition 37, invariant reaction 23, crystal structure 14, phase equilibrium 12) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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94 accepted literature values from 1 paper(s) (experimental 36, model 21, DFT 4, unspecified 33); 0 calculated phase diagram(s). 3 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/CA-MG-SN.json) · [CSV](https://data.orchid-project.org/systems/CA-MG-SN.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CA-MG-SN) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CA-MG-SN.html) · [Markdown](https://data.orchid-project.org/systems/CA-MG-SN.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 36 |
| model | 21 |
| DFT | 4 |
| unspecified | 33 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 23 |
| phase transition | 37 |
| phase equilibrium | 12 |
| formation | 4 |
| heat capacity / entropy / enthalpy | 4 |
| crystal structure | 14 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Ca–Mg–Sn system (23)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1405.15 | other: L + Ca2-xMgxSn -> Ca5Sn3 + Ca36Sn23 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 1; `ORC-JAA5F3UMXZ` |  |
| 1393.15 | quasi-peritectic: L + Ca5Sn3 -> Ca36Sn23 + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 2; `ORC-7URKMLT6PP` |  |
| 1380.15 | quasi-peritectic: L + Ca36Sn23 -> Ca31Sn20 + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 3; `ORC-B6VWLQ2Q2M` |  |
| 1262.15 | quasi-peritectic: L + Ca31Sn20 -> Ca7Sn6 + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 4; `ORC-LK2SLPIEWH` |  |
| 1254.15 | other: L -> CaSn + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 5; `ORC-KST76XKMUU` |  |
| 1253.15 | eutectic: L -> Ca2-xMgxSn + CaSn + Ca7Sn6 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 6; `ORC-CZX7MQXCT6` |  |
| 1043.15 | other: L -> Ca2-xMgxSn + Mg2Sn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 7; `ORC-5JD2EE2G3P` |  |
| 1037.15 | other: L -> Ca2-xMgxSn + Mg2Sn |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 8; `ORC-CM5RRA6SNF` |  |
| 974.15 | other: L -> Ca2-xMgxSn + Mg2Ca |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 9; `ORC-7MRZUBYTUT` |  |
| 973.15 | peritectic: L + Ca2-xMgxSn + CaSn -> Ca6.2Mg3.8Sn7 |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 11; `ORC-A6L4R2CZCN` |  |
| 964.15 | peritectic: L + Ca2-xMgxSn + CaSn -> Ca6.2Mg3.8Sn7 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 10; `ORC-AMUSEBVTUX` |  |
| 913.15 | other: L -> Ca2-xMgxSn + (Mg) |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 12; `ORC-HU3BPT6V4V` |  |
| 908.15 | other: L -> Ca2-xMgxSn + (Mg) |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 13; `ORC-NGS4HX66DS` |  |
| 864.15 | quasi-peritectic: L + Ca6.2Mg3.8Sn7 -> Ca2-xMgxSn + CaSn3 |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 16; `ORC-6NI2NBLRCB` |  |
| 859.15 | quasi-peritectic: L + CaSn -> Ca6.2Mg3.8Sn7 + CaSn3 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 14; `ORC-RPJINHOTQ4` |  |
| 849.15 | quasi-peritectic: L + Ca6.2Mg3.8Sn7 -> Ca2-xMgxSn + CaSn3 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 15; `ORC-VPWM7MMTGZ` |  |
| 836.15 | eutectic: L -> (Mg) + Ca2-xMgxSn + Mg2Sn |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 18; `ORC-M3WGRB2R5S` |  |
| 835.95 | eutectic: L -> (Mg) + Ca2-xMgxSn + Mg2Sn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 17; `ORC-S4WNFYQWTZ` |  |
| 794.15 | eutectic: L -> (Mg) + Mg2Ca + Ca2-xMgxSn |  | experimental | [1] Kozlov 2008 | Table 6, p. 13, row 20; `ORC-74MV3RPO2Q` |  |
| 788.15 | eutectic: L -> (Mg) + Mg2Ca + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 19; `ORC-MSMHCY5ZD7` |  |
| 783.15 | quasi-peritectic: L + Ca2-xMgxSn -> Mg2Sn + CaSn3 |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 21; `ORC-ZRLAP4E6YC` |  |
| 718.15 | eutectic: L -> (Ca) + Mg2Ca + Ca2-xMgxSn |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 22; `ORC-QBVBDRTH46` |  |
| 477.15 | other: L -> CaSn3 + Mg2Sn + (Sn) |  | model | [1] Kozlov 2008 | Table 6, p. 13, row 23; `ORC-ZX6CVPL2DD` |  |

## 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, Ca–Mg–Sn system (4)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Ca6.24Mg3.76Sn7 |  | -57.16 kJ/mol-atom | 298.15 | model |  |  | [1] Kozlov 2008 | Table 2, p. 5, row 15; `ORC-I54CLYHVEP` |  |
| Ca6.24Mg3.76Sn7 |  | -56.9 kJ/mol-atom | 298.15 | DFT |  |  | [1] Kozlov 2008; _cites Arroyave 2006_ | Table 2, p. 5, row 14; `ORC-TDKNRGT7XH` |  |
| CaMgSn |  | -56.94 kJ/mol-atom | 298.15 | model |  |  | [1] Kozlov 2008 | Table 2, p. 5, row 11; `ORC-K4IKLHMQSE` |  |
| CaMgSn |  | -56.89 kJ/mol-atom | 298.15 | DFT |  |  | [1] Kozlov 2008 | Table 2, p. 5, row 10; `ORC-TSQM2536D3` |  |

## Other properties

### Phase transition (37)

Table: Phase transition, Ca–Mg–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 788.15 K | 788.15 | eutectic: E3: L ↔ (Mg) + Mg2Ca + Ca2-xMgxSn; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 6; `ORC-SWN2ZJPMHC` |  |
| Phase transition | 788.15 K | 788.15 | eutectic: E3: L ↔ (Mg) + Mg2Ca + Ca2-xMgxSn; _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 11; `ORC-YBCABM7PMS` |  |
| Phase transition | 794.15 K | 794.15 | eutectic: E3: L ↔ (Mg) + Mg2Ca + Ca2-xMgxSn; _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 10; `ORC-OREPAZRW6Z` |  |
| Phase transition | 794.15 K | 794.15 | eutectic: E3: L ↔ (Mg) + Mg2Ca + Ca2-xMgxSn; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 5; `ORC-Q7RKZ3XHW3` |  |
| Phase transition | 800.15 K | 800.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + (Mg); _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 9; `ORC-CWDKRBZ52E` |  |
| Phase transition | 835.95 K | 835.95 | eutectic: E2: L ↔ (Mg) + Ca2-xMgxSn + Mg2Sn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 21; `ORC-UOOJGWKDLQ` |  |
| Phase transition | 836.15 K | 836.15 | eutectic: E2: L ↔ (Mg) + Ca2-xMgxSn + Mg2Sn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 20; `ORC-XHXYDW22XR` |  |
| Phase transition | 849.15 K | 849.15 | U5: L + Ca6.2Mg3.8Sn7 ↔ Ca2-xMgxSn + CaSn3; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 31; `ORC-ESEL52GRAG` |  |
| Phase transition | 864.15 K | 864.15 | U5: L + Ca6.2Mg3.8Sn7 ↔ Ca2-xMgxSn + CaSn3; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 30; `ORC-UWH7Q6DMR3` |  |
| Phase transition | 908.15 K | 908.15 | max4: L + Ca2-xMgxSn/Ca2-xMgxSn + (Mg); _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 14; `ORC-KD7HG2T6UX` |  |
| Phase transition | 913.15 K | 913.15 | max4: L + Ca2-xMgxSn/Ca2-xMgxSn + (Mg); _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 15; `ORC-OUFKORZH62` |  |
| Phase transition | 931.15 K | 931.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + Mg2Ca; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 3; `ORC-7FAL2VKZIG` |  |
| Phase transition | 939.15 K | 939.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + Mg2Ca; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 4; `ORC-IN2XMRBS7F` |  |
| Phase transition | 964.15 K | 964.15 | peritectic: P: L + Ca2-xMgxSn ↔ Ca6.2Mg3.8Sn7 + CaSn3; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 29; `ORC-NVF6WIMMKT` |  |
| Phase transition | 973.15 K | 973.15 | peritectic: P: L + Ca2-xMgxSn ↔ Ca6.2Mg3.8Sn7 + CaSn3; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 28; `ORC-USDLEJIOOM` |  |
| Phase transition | 1018.15 K | 1018.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + Mg2Sn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 18; `ORC-CWQQ2QK3CC` |  |
| Phase transition | 1022.15 K | 1022.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + Mg2Sn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 19; `ORC-OLCIF4VPWV` |  |
| Phase transition | 1037.15 K | 1037.15 | max2: L ↔ Ca2-xMgxSn + Mg2Sn; _alloy: Ca 0.05, Mg 0.617, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 34; `ORC-D2VWUKQQ7K` |  |
| Phase transition | 1043.15 K | 1043.15 | max2: L ↔ Ca2-xMgxSn + Mg2Sn; _alloy: Ca 0.05, Mg 0.617, Sn 0.333_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 35; `ORC-SQ4J4IMSTT` |  |
| Phase transition | 1134.15 K | 1134.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 2; `ORC-6OW6WPZFWY` |  |
| Phase transition | 1146.15 K | 1146.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 1; `ORC-75PNJLZKC3` |  |
| Phase transition | 1163.15 K | 1163.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.05, Mg 0.617, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 32; `ORC-JWWOF5ZEUX` |  |
| Phase transition | 1164.15 K | 1164.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.05, Mg 0.617, Sn 0.333_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 33; `ORC-ZLTOQJ6MJ4` |  |
| Phase transition | 1189.15 K | 1189.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + CaSn; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 27; `ORC-XXVMXHF4ZI` |  |
| Phase transition | 1198.15 K | 1198.15 | L + Ca2-xMgxSn/L + Ca2-xMgxSn + CaSn; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 26; `ORC-UVPLO6VRDW` |  |
| Phase transition | 1225.15 K | 1225.15 | L/L + Ca2-xMgxSn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 17; `ORC-AD4Q3NIVRD` |  |
| Phase transition | 1226.15 K | 1226.15 | L/L + Ca2-xMgxSn; _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 16; `ORC-2RMADU7XXK` |  |
| Phase transition | 1314.15 K | 1314.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 7; `ORC-2UONCPZDWK` |  |
| Phase transition | 1321.15 K | 1321.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 8; `ORC-4EOLH4TTPA` |  |
| Phase transition | 1358.15 K | 1358.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 13; `ORC-ZGJ2TOMZZH` |  |
| Phase transition | 1360.15 K | 1360.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 24; `ORC-K7FTGERWTY` |  |
| Phase transition | 1362.15 K | 1362.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 12; `ORC-5HYW22F5U3` |  |
| Phase transition | 1365.15 K | 1365.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 25; `ORC-BOSO7F6BUK` |  |
| Phase transition | 1435.15 K | 1435.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.333, Mg 0.333, Sn 0.334_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 23; `ORC-6HHC6CQI6P` |  |
| Phase transition | 1457.15 K | 1457.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.333, Mg 0.333, Sn 0.334_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 22; `ORC-E2SSDNMRGW` |  |
| Phase transition | 1494.15 K | 1494.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.5, Mg 0.167, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 5, p. 10, row 36; `ORC-N5INTJMGLT` |  |
| Phase transition | 1500.15 K | 1500.15 | L/L + Ca2-xMgxSn; _alloy: Ca 0.5, Mg 0.167, Sn 0.333_ | unspecified | [1] Kozlov 2008 | Table 5, p. 10, row 37; `ORC-4MI4O3H5Q2` |  |

### Phase equilibrium (12)

Table: Phase equilibrium, Ca–Mg–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase assemblage |  |  | Ca1.17Mg0.83Sn + Mg2Ca + (Mg0.5 at.% Ca) + (Mg); _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 9; `ORC-UB6OV55OVS` |  |
| Phase assemblage |  |  | Ca1.1Mg0.9Sn + Mg2Ca + (Mg0.7 at.% Ca) + (Mg); _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 10; `ORC-BIAKBMPKMV` |  |
| Phase assemblage |  |  | CaMgSn; _alloy: Ca 0.334, Mg 0.333, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 5; `ORC-4V4FZNUN5O` |  |
| Phase assemblage |  |  | CaMgSn + (Mg) + (Mg0.98 at.% Sn); _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 3; `ORC-N7AJG7YNBI` |  |
| Phase assemblage |  |  | CaMgSn + (Mg0.98 at.% Sn) + (Mg); _alloy: Ca 0.167, Mg 0.667, Sn 0.166_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 11; `ORC-T7FWPVPI4P` |  |
| Phase assemblage |  |  | CaMgSn + Ca6.2Mg3.8Sn7 + CaSn + CaSn3; _alloy: Ca 0.3647, Mg 0.2235, Sn 0.4118_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 6; `ORC-FI46LSW4AD` |  |
| Phase assemblage |  |  | CaMgSn + Mg2Sn; _alloy: Ca 0.05, Mg 0.617, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 7; `ORC-J76A77V5VX` |  |
| Phase assemblage |  |  | CaMgSn + Mg2Sn + (Mg) + (Mg1.1 at.% Sn); _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 4; `ORC-RVGS2L7ULH` |  |
| Phase assemblage |  |  | CaMgSn + Mg2Sn + (Mg1.1 at.% Sn) + (Mg); _alloy: Ca 5.000e-4, Mg 0.667, Sn 0.283_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 12; `ORC-L2KHAWMKDO` |  |
| Phase assemblage |  |  | CaMgSna + Ca1.5Mg0.5Sn + \[CaSn trace\]; _alloy: Ca 0.5, Mg 0.167, Sn 0.333_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 8; `ORC-TE2TYZBKZI` |  |
| Phase assemblage |  |  | CaMgSna + Mg2Ca + (Mg) + Ca1.17Mg0.83Sn + (Mg0.5 at.% Ca); _alloy: Ca 0.283, Mg 0.667, Sn 5.000e-4_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 1; `ORC-N6W7HPPB2K` |  |
| Phase assemblage |  |  | CaMgSna + Mg2Ca + (Mg) + Ca1.1Mg0.9Sn + (Mg0.7 at.% Ca); _alloy: Ca 0.222, Mg 0.667, Sn 0.111_ | experimental | [1] Kozlov 2008 | Table 4, p. 8, row 2; `ORC-2EI5QKUS72` |  |

### Heat capacity / entropy / enthalpy (4)

Table: Heat capacity / entropy / enthalpy, Ca–Mg–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy; _printed: S298_ | 40.59 J/mol-atom/K | 298.15 | Ca6.24Mg3.76Sn7; _alloy: Mg 0.221176, Sn 0.411765_ | model | [1] Kozlov 2008 | Table 2, p. 5, row 17; `ORC-54XCYC5ZBJ` |  |
| Entropy; _printed: S298_ | 40.59 J/mol-atom/K | 298.15 | Ca6.24Mg3.76Sn7; _alloy: Mg 0.221176, Sn 0.411765_ | DFT | [1] Kozlov 2008; _cites Arroyave 2006_ | Table 2, p. 5, row 16; `ORC-GFLX3YBHWP` |  |
| Entropy; _printed: S298_ | 37.83 J/mol-atom/K | 298.15 | CaMgSn; _alloy: Mg 0.333333, Sn 0.333333_ | DFT | [1] Kozlov 2008; _cites Arroyave 2006_ | Table 2, p. 5, row 12; `ORC-D7JXTQJK7N` |  |
| Entropy; _printed: S298_ | 37.84 J/mol-atom/K | 298.15 | CaMgSn; _alloy: Mg 0.333333, Sn 0.333333_ | model | [1] Kozlov 2008 | Table 2, p. 5, row 13; `ORC-LB43WYYMSL` |  |

### Crystal structure (14)

Table: Crystal structure, Ca–Mg–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 7.86 not_printed ± 0.02 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.3dd8e1` |  |
| Lattice a | 7.847 not_printed ± 0.008 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.65fd93` |  |
| Lattice a | 7.8731 not_printed ± 8.000e-4 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.d01b0f` |  |
| Lattice a | 5.5884 Å | 443 (\<) | (αCa); _alloy: Mg 0, Sn 0_ | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 2; `ORC-MMRURZ3ANV` |  |
| Lattice a | 4.48 Å | 642.5 | (βCa); _alloy: Mg 0, Sn 0_ | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 1; `ORC-UWYHT3F5NN` |  |
| Lattice a | 7.794 not_printed ± 0.001 | 918.9 (\<) | Ca6.2Mg3.8Sn7; _alloy: Mg 0.223529, Sn 0.411765_ | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 16; `ORC-YM33KJDYIH.633141` |  |
| Lattice b | 4.66 not_printed ± 0.02 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.67ebb0` |  |
| Lattice b | 4.6941 not_printed ± 3.000e-4 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.6b60a4` |  |
| Lattice b | 4.678 not_printed ± 0.007 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.6d1978` |  |
| Lattice b | 25.718 not_printed ± 0.004 | 918.9 (\<) | Ca6.2Mg3.8Sn7; _alloy: Mg 0.223529, Sn 0.411765_ | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 16; `ORC-YM33KJDYIH.04497e` |  |
| Lattice c | 8.749 not_printed ± 0.008 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.28e810` |  |
| Lattice c | 8.74 not_printed ± 0.02 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.6af0ca` |  |
| Lattice c | 8.7538 not_printed ± 7.000e-4 | 298.15 | Ca2-xMgxSn | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 15; `ORC-AZB47TPD2E.91468b` |  |
| Lattice c | 4.655 not_printed ± 0.001 | 918.9 (\<) | Ca6.2Mg3.8Sn7; _alloy: Mg 0.223529, Sn 0.411765_ | unspecified | [1] Kozlov 2008 | Table 1, p. 4, row 16; `ORC-YM33KJDYIH.26bab1` |  |

## Sources

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

1. A. Kozlov, M. Ohno, R. Arroyave, Z.K. Liu, R. Schmid-Fetzer, Phase equilibria, thermodynamics and solidification microstructures of Mg–Sn–Ca alloys, Part 1: Experimental investigation and thermodynamic modeling of the ternary Mg–Sn–Ca system, Intermetallics 16, 299-315 (2008). [doi:10.1016/j.intermet.2007.10.010](https://doi.org/10.1016/j.intermet.2007.10.010)

## 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/).