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Magnetic Heat Capacity of Stage 2 Graphite-CoCl2

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Abstract

The heat capacity Cp of graphite-CoCl2 (stage 2) is measured at zero and high (up to 14 T) magnetic fields (H applied in-plane). By suppressing the magnetic contribution to Cp at the highest fields, we are able to decompose Cp into its electronic, lattice, and magnetic contributions. The magnetic heat capacity CM is seen to have a broad peak at ≃ 9.1 K. The shape of this peak is consistent with the reported Monte Carlo calculations of CM based on a two-dimensional xy model.

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Authors and Affiliations

  1. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    M. Shayegan

  2. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    L. Salamanca-Riba

  3. Francis Bitter National Magnet Laboratory sponsored by NSF, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    G. Dresselhaus

  4. Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    M. Shayegan & L. Salamanca-Riba

  5. Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    J. Heremans & J.-P. Issi

  6. Universite Catholique de Louvain, Louvain, Belgium

    J. Heremans & J.-P. Issi

Authors
  1. M. Shayegan
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  2. L. Salamanca-Riba
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  3. J. Heremans
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  4. G. Dresselhaus
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  5. J.-P. Issi
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Shayegan, M., Salamanca-Riba, L., Heremans, J. et al. Magnetic Heat Capacity of Stage 2 Graphite-CoCl2. MRS Online Proceedings Library 20, 213 (1982). https://doi.org/10.1557/PROC-20-213

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  • DOI: https://doi.org/10.1557/PROC-20-213

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