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Research Article | Open Access

Theoretical work on magnetocaloric effect in La0.75Ca0.25MnO3

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

In this work, a phenomenological model is applied to describe the magnetocaloric effect for the La0.75Ca0.25MnO3 system near a second-order phase transition from a ferromagnetic to a paramagnetic state. Based on this model, it can predict the values of the magnetocaloric properties from calculation of magnetization as a function of temperature under different external magnetic fields. The magnetic entropy change reaches a peak of about 5.39 J/(kg·K) at 257 K upon 4 T applied field variation. The ∆SM distribution is much more uniform than that of gadolinium, which is desirable for an Ericson-cycle magnetic refrigerator.

Keywords

magnetocaloric effectmodelmagnetic entropy changeheat capacity changerelative cooling power

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Journal of Advanced Ceramics
Volume 1 Issue 4,
December 2012
Pages 290-295
DOI: 10.1007/s40145-012-0027-8
Cite this article:
HAMAD MA. Theoretical work on magnetocaloric effect in La0.75Ca0.25MnO3. Journal of Advanced Ceramics, 2012, 1(4): 290-295. https://doi.org/10.1007/s40145-012-0027-8

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Received: 26 September 2012
Revised: 10 November 2012
Accepted: 12 November 2012
Published: 09 January 2013
© The author(s) 2012
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