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Theoretical work on magnetocaloric effect in ceramic and sol–gel La0.67Ca0.33MnO3

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Abstract

In this study, a theoretical work on magnetocaloric properties of ceramic and sol–gel La0.67Ca0.33MnO3 samples was presented. The value of the magnetocaloric effect has been determined from theoretical work on magnetization as a function of temperature. It is showed that ceramic sample shows better magnetocaloric properties than the sol–gel one. Though the maximum magnetic entropy change ∆S M of ceramic sample upon 5 kOe applied field variation which is about 76 % of that of a pure Gd metal upon 5 kOe, ∆S M distribution of the La0.67Ca0.33MnO3 is much more uniform than that of Gd. This feature is desirable for an Ericson-cycle magnetic refrigerator.

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Authors and Affiliations

  1. Physics Department, College of Science, Al-Jouf University, P.O. Box 2014, Al-Jouf, Skaka, Saudi Arabia

    Mahmoud Aly Hamad

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  1. Mahmoud Aly Hamad
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Correspondence to Mahmoud Aly Hamad.

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Hamad, M.A. Theoretical work on magnetocaloric effect in ceramic and sol–gel La0.67Ca0.33MnO3 . J Therm Anal Calorim 111, 1251–1254 (2013). https://doi.org/10.1007/s10973-012-2505-1

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  • DOI: https://doi.org/10.1007/s10973-012-2505-1

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