Abstract

The low-temperature heat capacity of zinc chromite (ZnCr2O4) was measured between 6.5 K and 400 K using adiabatic calorimetry, and some thermochemical functions (CP(T), S(T), S°298, H(T)-H(0)) were derived from the results. The standard entropy (S°298 = 128.6±0.3 J mol−1 K−1) for zinc chromite was calculated from the results. Our calorimetric measurements indicate one extremely large anomaly in the heat capacity curve at ~12.3 K which is related to the cubic-tetragonal transition in ZnCr2O4.

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