Fe–Ho system
82 accepted literature values from 1 paper(s) (experimental 35, model 38, DFT 1, unspecified 8); 2 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.
Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown
| Evidence class | Values |
|---|---|
| experimental | 35 |
| model | 38 |
| DFT | 1 |
| unspecified | 8 |
| Property group | Values |
|---|---|
| invariant reaction | 21 |
| phase transition | 26 |
| formation | 22 |
| heat capacity / entropy / enthalpy | 13 |
Calculated phase diagrams
Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.
| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| FeHo-14Kar.tdb | S. Kardellas, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, J. Chem. Thermodyn., 74, 78-84(2014). doi:10.1016/j.jct.2013.11.037 | 41fa95b081c454d800beac69d16cb74942c1cb8dbbd088d04594e23ee55cf8d6 | viewer · TDB · JSON |
| FeHo-19Xu.tdb | L. Xu, J. Wang, S. Li, X.L. Chen, M.H. Rong, G.H. Rao, H.Y. Zhou, Calphad, 66, 101646(2019). doi:10.1016/j.calphad.2019.101646 | 93b42acc4ccdb2f9878ecfe2e646c4cc8828fcfffb6258eda4e162548472e816 | viewer · TDB · JSON |
| TDB file | T (K) | Phases at the invariant |
|---|---|---|
| FeHo-14Kar.tdb | 1667.56 | BCC_A2 (x(Ho) 2.100e-4) + FCC_A1 (x(Ho) 2.100e-4) + LIQUID (x(Ho) 0.07064) |
| FeHo-14Kar.tdb | 1667.56 | FCC_A1 (x(Ho) 2.100e-4) + BCC_A2 (x(Ho) 2.100e-4) + LIQUID (x(Ho) 0.07064) |
| FeHo-14Kar.tdb | 1618.86 | FCC_A1 (x(Ho) 2.400e-4) + LIQUID (x(Ho) 0.09484) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-14Kar.tdb | 1618.86 | FCC_A1 (x(Ho) 2.400e-4) + LIQUID (x(Ho) 0.09474) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-14Kar.tdb | 1600.08 | FE17HO2 (x(Ho) 0.10526) + LIQUID (x(Ho) 0.16094) + FE23HO6_D8A (x(Ho) 0.2069) |
| FeHo-14Kar.tdb | 1600.08 | FE17HO2 (x(Ho) 0.10526) + LIQUID (x(Ho) 0.16084) + FE23HO6_D8A (x(Ho) 0.2069) |
| FeHo-14Kar.tdb | 1583.31 | FE23HO6_D8A (x(Ho) 0.2069) + FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.28507) |
| FeHo-14Kar.tdb | 1583.31 | FE23HO6_D8A (x(Ho) 0.2069) + FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.28537) |
| FeHo-14Kar.tdb | 1568.03 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.31781) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-14Kar.tdb | 1568.03 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.31773) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-14Kar.tdb | 1568.03 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.31823) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-14Kar.tdb | 1184.8 | FCC_A1 (x(Ho) 0) + BCC_A2 (x(Ho) 0) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-14Kar.tdb | 1151.93 | FE2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.63475) + HCP_A3 (x(Ho) 0.99423) |
| FeHo-14Kar.tdb | 1151.93 | FE2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.63488) + HCP_A3 (x(Ho) 0.99423) |
| FeHo-14Kar.tdb | 510.17 | FE17HO2 (x(Ho) 0.10526) + FE23HO6_D8A (x(Ho) 0.2069) + FE3HO (x(Ho) 0.25) |
| FeHo-14Kar.tdb | 344.65 | BCC_A2 (x(Ho) 0) + FE17HO2 (x(Ho) 0.10526) + FE3HO (x(Ho) 0.25) |
| FeHo-19Xu.tdb | 1667.47 | BCC_A2 (x(Ho) 3.000e-5) + FCC_A1 (x(Ho) 3.000e-5) + LIQUID (x(Ho) 0.06426) |
| FeHo-19Xu.tdb | 1667.47 | FCC_A1 (x(Ho) 3.000e-5) + BCC_A2 (x(Ho) 3.000e-5) + LIQUID (x(Ho) 0.06424) |
| FeHo-19Xu.tdb | 1612.23 | FCC_A1 (x(Ho) 3.000e-5) + LIQUID (x(Ho) 0.08691) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-19Xu.tdb | 1612.23 | FCC_A1 (x(Ho) 3.000e-5) + LIQUID (x(Ho) 0.08703) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-19Xu.tdb | 1591.04 | FE17HO2 (x(Ho) 0.10526) + LIQUID (x(Ho) 0.16148) + FE23HO6_D8A (x(Ho) 0.2069) |
| FeHo-19Xu.tdb | 1591.03 | FE17HO2 (x(Ho) 0.10526) + LIQUID (x(Ho) 0.16192) + FE23HO6_D8A (x(Ho) 0.2069) |
| FeHo-19Xu.tdb | 1572.06 | FE23HO6_D8A (x(Ho) 0.2069) + FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.283) |
| FeHo-19Xu.tdb | 1572.06 | FE23HO6_D8A (x(Ho) 0.2069) + FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.28266) |
| FeHo-19Xu.tdb | 1562.74 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.30308) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-19Xu.tdb | 1562.73 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.30275) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-19Xu.tdb | 1562.73 | FE3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.30263) + FE2HO_C15 (x(Ho) 0.33333) |
| FeHo-19Xu.tdb | 1184.81 | FCC_A1 (x(Ho) 0) + BCC_A2 (x(Ho) 0) + FE17HO2 (x(Ho) 0.10526) |
| FeHo-19Xu.tdb | 1153.4 | FE2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.63665) + HCP_A3 (x(Ho) 0.9946) |
| FeHo-19Xu.tdb | 1153.4 | FE2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.63667) + HCP_A3 (x(Ho) 0.9946) |
Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull FeHo-14Kar
Invariant reactions (literature)
| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|
| 1709.15 | (βHo) ↔ (αHo) + L | model | [1] Kardellass 2014 | Table 6, p. 4, row 29 report | ||
| 1667.15 | δFe ↔ γFe + Liq | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 4 report | ||
| 1662.15 | δFe ↔ γFe + Liq | model | [1] Kardellass 2014 | Table 6, p. 4, row 5 report | ||
| 1612.15 | L ↔ γFe + Fe17Ho2 | Fe17Ho2: Ho 0.105263 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 7 report | |
| 1611.15 | eutectic: L ↔ (γFe) + Fe17Ho2 | L: Ho 0.092; (γFe): Ho 0; Fe17Ho2: Ho 0.105 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 4 report | |
| 1611.15 | L ↔ γFe + Fe17Ho2 | Fe17Ho2: Ho 0.105263 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 6 report | |
| 1591.15 | L ↔ Fe17Ho2 + Fe23Ho6 | Fe17Ho2: Ho 0.105263; Fe23Ho6: Ho 0.206897 | model | [1] Kardellass 2014 | Table 6, p. 4, row 15 report | |
| 1569.15 | L + Fe3Ho ↔ Fe23Ho6 | Fe3Ho: Ho 0.25; Fe23Ho6: Ho 0.206897 | model | [1] Kardellass 2014 | Table 6, p. 4, row 21 report | |
| 1566.15 | peritectic: L + Fe23Ho6 ↔ Fe3Ho | L: Ho 0.27; Fe23Ho6: Ho 0.206; Fe3Ho: Ho 0.25 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 8 report | |
| 1566.15 | L + Fe3Ho ↔ Fe23Ho6 | Fe3Ho: Ho 0.25; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 20 report | |
| 1566.15 | L + Fe3Ho ↔ Fe23Ho6 | Fe3Ho: Ho 0.25; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 19 report | |
| 1561.15 | L + Fe3Ho ↔ Fe2Ho | Fe3Ho: Ho 0.25; Fe2Ho: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 23 report | |
| 1561.15 | L + Fe3Ho ↔ Fe2Ho | Fe3Ho: Ho 0.25; Fe2Ho: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 22 report | |
| 1558.15 | L ↔ Fe17Ho2 + Fe23Ho6 | Fe17Ho2: Ho 0.105263; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 14 report | |
| 1558.15 | L ↔ Fe17Ho2 + Fe23Ho6 | Fe17Ho2: Ho 0.105263; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 13 report | |
| 1558.15 | peritectic: L + Fe3Ho ↔ Fe2Ho | L: Ho 0.36; Fe3Ho: Ho 0.25; Fe2Ho: Ho 0.333 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 9 report | |
| 1557.15 | eutectic: L ↔ Fe17Ho2 + Fe23Ho6 | L: Ho 0.178; Fe17Ho2: Ho 0.105; Fe23Ho6: Ho 0.206 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 6 report | |
| 1554.15 | L + Fe3Ho ↔ Fe2Ho | Fe3Ho: Ho 0.25; Fe2Ho: Ho 0.333333 | model | [1] Kardellass 2014 | Table 6, p. 4, row 24 report | |
| 1148.15 | L ↔ Fe2Ho + (αHo) | Fe2Ho: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 26 report | |
| 1148.15 | L ↔ Fe2Ho + (αHo) | Fe2Ho: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 27 report | |
| 1146.15 | L ↔ Fe2Ho + (αHo) | Fe2Ho: Ho 0.333333 | model | [1] Kardellass 2014 | Table 6, p. 4, row 28 report |
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.
| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|---|
| Fe17Ho2 | -5.8 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 3 report | ||||
| Fe17Ho2 | -4.32 kJ/mol (basis unstated) ± 0.02 | 1066 | experimental | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 2 report | ||||
| Fe17Ho2 | -1.09 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Kardellass 2013 | Table 3, p. 3, row 1 report | ||||
| Fe17Ho2 | -0.295 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 | Table 3, p. 3, row 4 report | ||||
| Fe23Ho6 | -6.7 kJ/mol (basis unstated) | 298.15 | experimental | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 7 report | ||||
| Fe23Ho6 | -6.2 kJ/mol (basis unstated) | 300 | model | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 6 report | ||||
| Fe23Ho6 | -2.12 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Kardellass 2013 | Table 3, p. 3, row 5 report | ||||
| Fe23Ho6 | -1.84 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 | Table 3, p. 3, row 8 report | ||||
| Fe2Ho | -9.5 kJ/mol (basis unstated) | 298.15 | DFT | [1] Kardellass 2014 cites Pauling | Table 3, p. 3, row 15 report | ||||
| Fe2Ho | -6.2 kJ/mol (basis unstated) | 300 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 19 report | ||||
| Fe2Ho | -6.2 kJ/mol (basis unstated) | 300 | model | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 13 report | ||||
| Fe2Ho | -5.9 kJ/mol (basis unstated) | 290 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 18 report | ||||
| Fe2Ho | -4.3 kJ/mol (basis unstated) | 298.15 | experimental | [1] Kardellass 2014 cites Latini 2013 doi | Table 3, p. 3, row 14 report | ||||
| Fe2Ho | -3 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Kardellass 2013 | Table 3, p. 3, row 11 report | ||||
| Fe2Ho | -2.97 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Pauling | Table 3, p. 3, row 20 report | ||||
| Fe2Ho | -2.9 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Niessen 1983 doi | Table 3, p. 3, row 12 report | ||||
| Fe2Ho | -2.65 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 | Table 3, p. 3, row 17 report | ||||
| Fe2Ho | -2.6 kJ/mol (basis unstated) ± 3.3 | 1373 | experimental | [1] Kardellass 2014 cites Meschel 2013 doi | Table 3, p. 3, row 16 report | ||||
| Fe3Ho | -2.52 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 | Table 3, p. 3, row 10 report | ||||
| Fe3Ho | -2 kJ/mol (basis unstated) | 298.15 | model | [1] Kardellass 2014 cites Kardellass 2013 | Table 3, p. 3, row 9 report |
Other properties
Phase transition (26)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Phase transition | 325.15 K | 325.15 | magnetic | experimental | [1] Kardellass 2014 cites Strnat 1966 doi | p. 3 report | In good agreement, the Curie temperatures according to mutual induction measurements are 52 °C [27] for Fe17Ho2, 293 °C [28] |
| Phase transition | 1185.15 K | 1185.15 | polymorphic | model | [1] Kardellass 2014 cites Okamoto 1993 | p. 1 report | According to [6,17] the melting point of dFe is 1538 °C and the dFe M cFe and cFe M aFe allotropic transformation temperatures are 1394 °C and 912 °C, respectively. |
| Phase transition | 1555.15 K | 1555.15 | L ↔ Fe2Ho L: Ho 0.333333; Fe2Ho: Ho 0.333333 | model | [1] Kardellass 2014 | Table 6, p. 4, row 25 report | |
| Phase transition | 1561.15 K | 1561.15 | Fe2Ho | experimental | [1] Kardellass 2014 cites Roe 1970 doi | p. 1 report | The two phases Fe23Ho6 and Fe17Ho2 melted congruently at 1332 °C and 1343 °C, respectively, while Fe3Ho and Fe2Ho melted incongruently at 1293 °C and 1288 °C, respectively, table 1. The melting points for all the intermediate phases are believed accurate with ± 3 °C [4]. |
| Phase transition | 1566.15 K | 1566.15 | Fe3Ho | experimental | [1] Kardellass 2014 cites Roe 1970 doi | p. 1 report | The two phases Fe23Ho6 and Fe17Ho2 melted congruently at 1332 °C and 1343 °C, respectively, while Fe3Ho and Fe2Ho melted incongruently at 1293 °C and 1288 °C, respectively, table 1. The melting points for all the intermediate phases are believed accurate with ± 3 °C [4]. |
| Phase transition | 1603.15 K | 1603.15 | L ↔ Fe23Ho6 L: Ho 0.206897; Fe23Ho6: Ho 0.206897 | model | [1] Kardellass 2014 | Table 6, p. 4, row 18 report | |
| Phase transition | 1604.15 K | 1604.15 | L ↔ Fe23Ho6 L: Ho 0.206897; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 17 report | |
| Phase transition | 1605.15 K | 1605.15 | L ↔ Fe23Ho6 L: Ho 0.206897; Fe23Ho6: Ho 0.206897 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 16 report | |
| Phase transition | 1605.15 K | 1605.15 | congruent melting | experimental | [1] Kardellass 2014 cites Roe 1970 doi | p. 1 report | The two phases Fe23Ho6 and Fe17Ho2 melted congruently at 1332 °C and 1343 °C, respectively, while Fe3Ho and Fe2Ho melted incongruently at 1293 °C and 1288 °C, respectively, table 1. The melting points for all the intermediate phases are believed accurate with ± 3 °C [4]. |
| Phase transition | 1605.15 K | 1605.15 | congruent melting: L ↔ Fe23Ho6 L: Ho 0.206; Fe23Ho6: Ho 0.206 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 7 report | |
| Phase transition | 1613.15 K | 1613.15 | L ↔ Fe17Ho2 L: Ho 0.105263; Fe17Ho2: Ho 0.105263 | model | [1] Kardellass 2014 | Table 6, p. 4, row 12 report | |
| Phase transition | 1616.15 K | 1616.15 | L ↔ Fe17Ho2 L: Ho 0.105263; Fe17Ho2: Ho 0.105263 | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 10 report | |
| Phase transition | 1616.15 K | 1616.15 | congruent melting | experimental | [1] Kardellass 2014 cites Roe 1970 doi | p. 1 report | The two phases Fe23Ho6 and Fe17Ho2 melted congruently at 1332 °C and 1343 °C, respectively, while Fe3Ho and Fe2Ho melted incongruently at 1293 °C and 1288 °C, respectively, table 1. The melting points for all the intermediate phases are believed accurate with ± 3 °C [4]. |
| Phase transition | 1616.15 K | 1616.15 | congruent melting: L ↔ Fe17Ho2 L: Ho 0.105; Fe17Ho2: Ho 0.105 | unspecified | [1] Kardellass 2014 cites Okamoto 1993 | Table 1, p. 2, row 5 report | |
| Phase transition | 1617.15 K | 1617.15 | L ↔ Fe17Ho2 L: Ho 0.105263; Fe17Ho2: Ho 0.105263 | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 11 report | |
| Phase transition | 1667.15 K | 1667.15 | polymorphic | model | [1] Kardellass 2014 cites Okamoto 1993 | p. 1 report | According to [6,17] the melting point of dFe is 1538 °C and the dFe M cFe and cFe M aFe allotropic transformation temperatures are 1394 °C and 912 °C, respectively. |
| Phase transition | 1744.15 K | 1744.15 | L ↔ (βHo) | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 31 report | |
| Phase transition | 1745.15 K | 1745.15 | congruent melting: L ↔ (βHo) (βHo): Ho 1 | unspecified | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 1, p. 2, row 11 report | |
| Phase transition | 1747.15 K | 1747.15 | Ho + liquid | model | [1] Kardellass 2014 cites Massalski 1991 | p. 2 report | The melting point of Ho is 1474 °C [17]. |
| Phase transition | 1747.15 K | 1747.15 | L ↔ (βHo) | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 30 report | |
| Phase transition | 1747.15 K | 1747.15 | L ↔ (βHo) | model | [1] Kardellass 2014 | Table 6, p. 4, row 32 report | |
| Phase transition | 1809.15 K | 1809.15 | δFe ↔ Liq | experimental | [1] Kardellass 2014 cites Roe 1970 doi | Table 6, p. 4, row 2 report | |
| Phase transition | 1811.15 K | 1811.15 | congruent melting: L ↔ δFe δFe: Ho 0 | unspecified | [1] Kardellass 2014 cites Massalski 1991 | Table 1, p. 2, row 1 report | |
| Phase transition | 1811.15 K | 1811.15 | dFe + liquid | model | [1] Kardellass 2014 cites Okamoto 1993 | p. 1 report | According to [6,17] the melting point of dFe is 1538 °C and the dFe M cFe and cFe M aFe allotropic transformation temperatures are 1394 °C and 912 °C, respectively. |
| Phase transition | 1811.15 K | 1811.15 | δFe ↔ Liq | model | [1] Kardellass 2014 | Table 6, p. 4, row 3 report | |
| Phase transition | 1811.15 K | 1811.15 | δFe ↔ Liq | experimental | [1] Kardellass 2014 cites Kubaschewski 1982 | Table 6, p. 4, row 1 report |
Formation (2)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Entropy of formation | 1.8 J/mol (basis unstated)/K | 298.15 | Fe17Ho2 alloy: Ho 0.105263 | model | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 3 report | |
| Entropy of formation | 0.85 J/mol (basis unstated)/K ± 0.01 | 1066 | Fe17Ho2 alloy: Ho 0.105263 | experimental | [1] Kardellass 2014 cites Gozzi 2007 doi | Table 3, p. 3, row 2 report |
Heat capacity / entropy / enthalpy (13)
| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---|---|---|---|---|---|---|
| Entropy printed: Entropy of formation | 41.63 J/mol (basis unstated)/K | 290 | Fe2Ho alloy: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 18 report | |
| Entropy printed: Entropy of formation | 38.03 J/mol (basis unstated)/K | 298.15 | Fe17Ho2 alloy: Ho 0.105263 | model | [1] Kardellass 2014 | Table 3, p. 3, row 4 report | |
| Entropy printed: Entropy of formation | 43.15 J/mol (basis unstated)/K | 298.15 | Fe23Ho6 alloy: Ho 0.206897 | model | [1] Kardellass 2014 | Table 3, p. 3, row 8 report | |
| Entropy printed: Entropy of formation | 49.18 J/mol (basis unstated)/K | 298.15 | Fe2Ho alloy: Ho 0.333333 | model | [1] Kardellass 2014 | Table 3, p. 3, row 17 report | |
| Entropy printed: Entropy of formation | 45.02 J/mol (basis unstated)/K | 298.15 | Fe3Ho alloy: Ho 0.25 | model | [1] Kardellass 2014 | Table 3, p. 3, row 10 report | |
| Entropy printed: Entropy of formation | 42.66 J/mol (basis unstated)/K | 300 | Fe2Ho alloy: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 19 report | |
| Entropy printed: Entropy of formation | 42.66 J/mol (basis unstated)/K | 300 | Fe2Ho alloy: Ho 0.333333 | model | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 13 report | |
| Heat capacity | 30.09 J/mol (basis unstated)/K | 290 | Fe2Ho alloy: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 18 report | |
| Heat capacity | 24.71 J/mol (basis unstated)/K | 298.15 | Fe17Ho2 alloy: Ho 0.105263 | model | [1] Kardellass 2014 | Table 3, p. 3, row 4 report | |
| Heat capacity | 24.98 J/mol (basis unstated)/K | 298.15 | Fe23Ho6 alloy: Ho 0.206897 | model | [1] Kardellass 2014 | Table 3, p. 3, row 8 report | |
| Heat capacity | 25.33 J/mol (basis unstated)/K | 298.15 | Fe2Ho alloy: Ho 0.333333 | model | [1] Kardellass 2014 | Table 3, p. 3, row 17 report | |
| Heat capacity | 25.11 J/mol (basis unstated)/K | 298.15 | Fe3Ho alloy: Ho 0.25 | model | [1] Kardellass 2014 | Table 3, p. 3, row 10 report | |
| Heat capacity | 30.45 J/mol (basis unstated)/K | 300 | Fe2Ho alloy: Ho 0.333333 | experimental | [1] Kardellass 2014 cites Germano 1981 doi | Table 3, p. 3, row 19 report |
Sources
Reporting papers the values were read from (a value cited from another work names that work in its row).
- S. Kardellass, C. Servant, N. Selhaoui, A. Iddaoudi, M. Ait Amar, L. Bouirden, A thermodynamic assessment of the Iron+Holmium phase diagram, The Journal of Chemical Thermodynamics 74, 78-84 (2014). doi:10.1016/j.jct.2013.11.037