Ge10Yb11: enthalpy of formation
6 accepted literature formation-enthalpy value(s) (experimental 2, model 3, DFT 1); experimental median -69.9 kJ/mol-atom (n = 2).
Systems: Ge–Yb
Literature values
| Value | Phase as printed | T (K) | Class | Method | System | Source | Location | Quote |
|---|---|---|---|---|---|---|---|---|
| -69.9 kJ/mol-atom ± 8.2 | Yb11Ge10 | 298.15 | experimental | KEWL and KEMS | Ge–Yb | [1] Achgar 2018 cites Balducci 2007 doi | Table 2, p. 5, row 11 report | |
| -69.9 kJ/mol-atom ± 8.2 | Yb11Ge10 | 298.15 | experimental | KE technique | Ge–Yb | [2] Dai-man 2018 cites Balducci 2007 | Table 2, p. 4, row 11 report | |
| -77.85 kJ/mol-atom | Yb11Ge10 | 298.15 | model | SCM | Ge–Yb | [2] Dai-man 2018 | Table 2, p. 4, row 13 report | |
| -70.319 kJ/mol-atom | Yb11Ge10 | model | Optimization | Ge–Yb | [1] Achgar 2018 | Table 2, p. 5, row 12 report | ||
| -69.8555 kJ/mol-atom | Yb11Ge10 | model | Optimization | Ge–Yb | [1] Achgar 2018 | Table 2, p. 5, row 13 report | ||
| -63.4 kJ/mol-atom | Yb11Ge10 | 0 | DFT | DFT calculation | Ge–Yb | [2] Dai-man 2018 cites Saal 2013 | Table 2, p. 4, row 12 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 |
|---|---|---|---|---|---|---|---|---|
| -69.9 | kJ/mol-atom | 8.2 | 0.05 | 4.2 (kems_vapour, calibrated) | 8.2 | |||
| -69.9 | kJ/mol-atom | 8.2 | 0.05 | 4.2 (kems_vapour, calibrated) | 8.2 | |||
| -77.85 | kJ/mol-atom | 0.005 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -70.319 | kJ/mol-atom | 5.000e-4 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -69.8555 | kJ/mol-atom | 5.000e-5 | 3.9 (model_calculated, calibrated) | 3.9 | ||||
| -63.4 | kJ/mol-atom | 0.05 | 8.395 (dft, calibrated) | 8.395 |
Sources
- Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018). doi:10.1007/s10973-017-6203-x
- Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018). doi:10.1080/00150193.2018.1392217