Ni3Yb: enthalpy of formation
8 accepted literature formation-enthalpy value(s) (experimental 6, model 2); experimental median -28 kJ/mol-atom (n = 4); OQMD -31.135 kJ/mol-atom (oqmd-30878).
Systems: Ni–Yb
Literature values
| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|
| -30 kJ/mol-atom | YbNi3 | 298.15 | experimental | DSC | Ni–Yb | [1] Hu 2017 cites Brutti 2002 doi | p. 17 report | Two preliminary DSC measurements on YbNi3 and YbNi2 have also been mentioned in the work by Brutti et al. [13], where the enthalpies of formation at 298K were reported to be around -30 to -32 kJ/mol-atom for YbNi3 and -30 kJ/mol-atom for YbNi2 tentatively, which slightly differ from their KE results. |
| -30 kJ/mol-atom | YbNi3 | 298.15 | experimental | XRD, DSC | Ni–Yb | [1] Hu 2017 cites Palenzona 1973 doi | Table 3, p. 26, row 19 report | |
| -30 unknown | YbNi3 | 298.15 | experimental | XRD, DSC | Ni–Yb | [1] Hu 2017 cites Palenzona 1973 doi | Table 3, p. 26, row 19 report | |
| -26 unknown ± 4.8 | YbNi3 | 298.15 | experimental | XRD, KE method | Ni–Yb | [1] Hu 2017 cites Buschow 1972 doi | Table 3, p. 26, row 18 report | |
| -26 kJ/mol-atom ± 4.8 | Ni3Yb | 298.15 | experimental | Vapor pressure | Ni–Yb | [2] Kardellass 2016 cites Brutti 2002 doi | Table 2, p. 5, row 12 report | |
| -24.8 kJ/mol-atom | Ni3Yb | 298.15 | experimental | Calorimetry | Ni–Yb | [2] Kardellass 2016 cites Berezutskii 2014 doi | Table 2, p. 5, row 14 report | |
| -28.8 kJ/mol-atom | Ni3Yb | 298.15 | model | Prediction | Ni–Yb | [2] Kardellass 2016 cites De 1988 | Table 2, p. 5, row 11 report | |
| -23.42 kJ/mol-atom | Ni3Yb | 298.15 | model | Optimization | Ni–Yb | [2] Kardellass 2016 | Table 2, p. 5, row 13 report |
Uncertainty budget
Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.
| Value | Unit | Printed | Reading | Method (class, basis) | Composition | Scatter | Conversion | Effective |
|---|---|---|---|---|---|---|---|---|
| -30 | kJ/mol-atom | 0.05 | 2 (dsc_dta, prior) | 2 | ||||
| -30 | kJ/mol-atom | 0.5 | 2 (dsc_dta, prior) | 2 | ||||
| -30 | unknown | 0.5 | unit 'unknown' not convertible to kJ/mol-atom | unit 'unknown' not convertible to kJ/mol-atom | ||||
| -26 | unknown | 4.8 | 0.5 | unit 'unknown' not convertible to kJ/mol-atom | 4.8 | |||
| -26 | kJ/mol-atom | 4.8 | 0.05 | 4.2 (kems_vapour, calibrated) | 4.8 | |||
| -24.8 | kJ/mol-atom | 0.05 | 3.2 (solution_reaction_calorimetry, calibrated) | 3.2 | ||||
| -28.8 | kJ/mol-atom | 0.05 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -23.42 | kJ/mol-atom | 0.005 | 3.9 (model_calculated, calibrated) | 3.9 |
DFT formation energies
Lowest-energy entries at this composition. Materials Project and OQMD use different energy references and are never averaged. 1 eV/atom = 96.485 kJ/mol-atom.
| Source | Entry | kJ/mol-atom | eV/atom | Space group | E above hull (kJ/mol-atom) | E above hull (eV/atom) | Theoretical |
|---|---|---|---|---|---|---|---|
| OQMD | oqmd-30878 | -31.135 | -0.322695 | R-3m | 0 | 0 | no |
DFT sources: A. Jain et al., Commentary: The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002. doi:10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501-1509; S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010. doi:10.1007/s11837-013-0755-4 (CC BY 4.0);
Sources
- Yong-Jie Hu, Yi Wang, Samad A. Firdosy, Kurt E. Star, Jean-Pierre Fleurial, Vilupanur A. Ravi et al., First-principles calculations and thermodynamic modeling of the Yb-Ni binary system, Calphad 59, 207-217 (2017). doi:10.1016/j.calphad.2017.09.004
- Saïd Kardellass, Colette Servant, Najim Selhaoui, Thermodynamic description of the Ni–Yb and Ni–Eu binary systems, J Therm Anal Calorim 125, 255-269 (2016). doi:10.1007/s10973-016-5380-3