Low-temperature heat capacity of magnesioferrite (MgFe2O4) |
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Authors: | Stephan Klemme Martin Ahrens |
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Affiliation: | 1. Mineralogisches Institut, Universit?t Heidelberg, Im Neuenheimer Feld 236, 69120, Heidelberg, Germany 2. Max-Planck-Institut für Festk?rperforschung, Heisenbergstr. 1, 70569, Stuttgart, Germany
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Abstract: | The low-temperature heat capacity of magnesioferrite (MgFe2O4) was measured between 1.5 K and 300 K, and thermochemical functions were derived from the results. No heat capacity anomaly was observed. From our data, we suggest a standard entropy (298.15 K) for magnesioferrite of 120.8±0.6 J mol−1 K−1, which is about 2.4 J mol−1 K−1 higher than previously reported calorimetric studies; but is in rough agreement with predictions from sets of internally consistent thermodynamic data. |
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