This article is cited in 9 papers

Magnetism

Influence of the granule size on the magnetocaloric properties of manganite La$_{0.5}$Ca$_{0.5}$MnO$_3$

A.G. Gamzatov^a, A. B. Batdalov^a, A. M. Aliev^a, P. Amirzadeh^b, P. Kameli^b, H. Ahmadvand^b, H. Salamati<sup>b

a</sup> Daghestan Institute of Physics after Amirkhanov
^b Department of Physics, Isfahan University of Technology, Isfahan, Iran

Abstract: The influence of the granule size on the magnetic and magnetocaloric properties of ceramic sample of manganite La$_{0.5}$Ca$_{0.5}$MnO$_3$ has been investigated. Anomalies indicating the coexistence of the ferromagnetic metallic and antiferromagnetic charge-ordered phases below $T_C$ have been found in the temperature dependence of the magnetocaloric effect. It has been shown that a decrease in the granule size to 90 nm leads to the complete suppression of the antiferromagnetic charge-ordered phase.

Received: 07.08.2012

 English version: Physics of the Solid State, 2013, 55:3, 502–507

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