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Journal of Advanced Ceramics

, Volume 1, Issue 4, pp 290–295

First Online: 09 January 2013Received: 26 September 2012Revised: 10 November 2012Accepted: 12 November 2012


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 ΔSM distribution is much more uniform than that of gadolinium, which is desirable for an Ericson-cycle magnetic refrigerator.

Key wordsmagnetocaloric effect model magnetic entropy change heat capacity change relative cooling power This article is published with open access at

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Autor: Mahmoud Aly Hamad


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