Magnetocaloric Properties of Perovskite-Type Manganite La0.65Sr0.2Na0.15MnO3

Qing Ling Ji; Zheng Guang Zou; Fei Long; Yi Wu

doi:10.4028/www.scientific.net/KEM.697.93

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Magnetocaloric Properties of Perovskite-Type...

Magnetocaloric Properties of Perovskite-Type Manganite La_0.65Sr_0.2Na_0.15MnO₃

Abstract:

Polycrystalline perovskite-type manganite La_0.65Sr_0.2Na_0.15MnO₃ was prepared by sol-gel method. An X-ray diffraction measurement showed that the sample was a single phase. The Curie temperature of the sample was determined to be 350K. The maximum magnetic entropy change |ΔS_M| corresponding to a 1T magnetic field variation was found to be 1.08 J/kg K and about 40.6 J/kg of relative cooling power was obtained near the Curie temperature. The first-order or the second-order on the phase transition of the manganite was distinguished by Banerjee criteria.

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Key Engineering Materials (Volume 697)

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93-96

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https://doi.org/10.4028/www.scientific.net/KEM.697.93

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July 2016

Authors:

Qing Ling Ji, Zheng Guang Zou*, Fei Long, Yi Wu

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Magnetic Entropy Change, Magnetocaloric Effect, Perovskite-Type Manganite

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