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Journal of Materials Science
Published in: Journal of Materials Science 4/2018

23-10-2017 | Ceramics

Magnetocaloric effect in (La0.7Sr0.3MnO3)1−x –(BaTiO3) x solid solution spin-glass system

Authors: C. Nayek, M. K. Ray, A. Pal, I. M. Obaidat, P. Murugavel

Published in: Journal of Materials Science | Issue 4/2018

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Abstract

(La0.7Sr0.3MnO3)1−x –(BaTiO3) x solid solution samples (x = 0, 0.03, and 0.08) were synthesized by sol–gel route. Pure La0.7Sr0.3MnO3 has orthorhombic structure with Pbnm space group whereas solid solution samples possess rhombohedral structure with R-3c space group. Temperature-dependent ac susceptibility at different frequencies and memory effect confirmed the spin-glass behavior in these samples. The samples exhibited magnetocaloric coefficient around room temperature. The maximum values of magnetic entropy change observed in our samples are 0.45, 0.86, and 1.07 J Kg−1 K−1 for x = 0.03 and 0.62, 1.23 and 1.56 J Kg−1 K−1 for x = 0.08 compounds at 2, 4, and 5 T applied magnetic fields, respectively. The relative cooling power values for x = 0.03 and 0.08 are 55.9 and 116.5 J Kg−1, respectively, at 5 T. The observed multifunctional properties of the studied system give a new direction to explore the magnetocaloric effect in similar such systems.
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Metadata
Title
Magnetocaloric effect in (La0.7Sr0.3MnO3)1−x –(BaTiO3) x solid solution spin-glass system
Authors
C. Nayek
M. K. Ray
A. Pal
I. M. Obaidat
P. Murugavel
Publication date
23-10-2017
Publisher
Springer US
Published in
Journal of Materials Science / Issue 4/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1718-x

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