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Low-temperature specific heat of GdCu, GdCu2, and GdCu5 antiferromagnets

  • Proceedings of the XXXIV Conference on Low-Temperature Physics “NT-34”
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

It is found that the expansion of the low-temperature specific heat C p of the antiferromagnetic metallic compounds GdCu, GdCu2, and GdCu5 contains a large term that is proportional to the square of temperature (δT 2). The value of δ is inversely proportional to the Néel temperature T N. The GdCu2 compound exhibits a strong dependence of the specific heat anomaly at T N on an external magnetic field. The results obtained are compared with the data for other metal antiferromagnets, for example, the CuMnSb Heusler alloy.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620041, Russia

    S. M. Podgornykh & N. I. Kourov

Authors
  1. S. M. Podgornykh
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  2. N. I. Kourov
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Corresponding author

Correspondence to S. M. Podgornykh.

Additional information

Original Russian Text © S.M. Podgornykh, N.I. Kourov, 2007, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2007, Vol. 71, No. 8, pp. 1114–1115.

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Podgornykh, S.M., Kourov, N.I. Low-temperature specific heat of GdCu, GdCu2, and GdCu5 antiferromagnets. Bull. Russ. Acad. Sci. Phys. 71, 1079–1080 (2007). https://doi.org/10.3103/S1062873807080072

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  • DOI: https://doi.org/10.3103/S1062873807080072

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