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Thermodynamic properties of CoCr2O4: specific heat and magnetic entropy

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Abstract

We present the temperature dependence of the specific heat of CoCr2O4 between 2.08 K and 306 K in zero magnetic field. The lattice component can be described by the Komada–Westrum model with a characteristic temperature ΘKW = 541 K. The entropy of the magnetic component amounts to 33.51 J mol−1 K−1 at T = 298.15 K, in good agreement with the magnetic entropy of Co2+ and Cr3+ ions with completely quenched orbital moments. We compare our results with data available in literature.

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Acknowledgments

Part of this work has been supported by EuroMagNET II under EU contract no. 228043, and by RFBR via grants nos. 12-02-00151-a and 12-02-00960-a.

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Authors and Affiliations

  1. Hochfeld-Magnetlabor, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany

    M. Uhlarz, A. V. Pronin & J. Wosnitza

  2. A.M. Prokhorov Institute of General Physics, Russian Academy of Sciences, Moscow, Russian Federation

    A. S. Prokhorov

  3. Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russian Federation

    A. S. Prokhorov

  4. Moscow Institute of Radiotechnics, Electronics, and Automation, Moscow, Russian Federation

    A. A. Bush

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  1. M. Uhlarz
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  2. A. V. Pronin
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  3. J. Wosnitza
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  4. A. S. Prokhorov
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  5. A. A. Bush
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Correspondence to M. Uhlarz.

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Uhlarz, M., Pronin, A.V., Wosnitza, J. et al. Thermodynamic properties of CoCr2O4: specific heat and magnetic entropy. Phys Chem Minerals 40, 203–206 (2013). https://doi.org/10.1007/s00269-012-0561-5

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  • DOI: https://doi.org/10.1007/s00269-012-0561-5

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