Si1.74Yb: enthalpy of formation

2 accepted literature formation-enthalpy value(s) (experimental 1, model 1); experimental median -37.4 kJ/mol-atom (n = 1).

Systems: Si–Yb

Literature values

Enthalpy of formation of Si1.74Yb reported in the literature (2)
ValuePhase as printedT (K)ClassMethodSystemSourceLocationQuote
-37.4 kJ/mol-atom ± 0.9YbSi1.74298.15experimentalSi–Yb[1] Brutti 2005
cites Brutti 2003 doi		Table 6, p. 7, row 15
report
-41.1 kJ/mol-atomYbSi1.74298.15modelSi–Yb[1] Brutti 2005Table 6, p. 7, row 14
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.

Uncertainty budget of the literature values of Si1.74Yb
ValueUnitPrintedReadingMethod (class, basis)CompositionScatterConversionEffective
-37.4kJ/mol-atom0.90.053.5 (unknown, calibrated)3.5
-41.1kJ/mol-atom0.053.9 (model_calculated, calibrated)3.9

Sources

  1. S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005). doi:10.1016/j.calphad.2005.06.004