Abstract
The influence of Zr-doping on the magnetocaloric effect of La0.67Sr0.33Mn1-xZrxO3 manganese perovskites in low magnetic field has been investigated. Using Hamad’s phenomenological model, we have estimated the important magnetocaloric properties, for example, the thermal magnetization, the change of magnetic entropy and the relative cooling power. We have shown that the magnetocaloric properties decrease as the increase of the dopant amount. Tunable magnetocaloric effect in these compounds is advantageous to magnetic refrigeration applications in wide temperature ranges. Therefore, these compounds are good candidates for working materials in magnetic refrigeration.
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