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Home > Issues > RetrieveLarge Magnetic Entropy Change in La0.55Ce0.2Ca0.25MnO3 Perovskite
(School of Nano and Advanced Materials Engineering, Changwon National University), Shalendra Kumar (School of Nano and Advanced Materials Engineering, Changwon National University), Faheem Ahmed (School of Nano and Advanced Materials Engineering, Changwon National University), Nishat Arshi (School of Nano and Advanced Materials Engineering, Changwon National University), G. W. Kim (School of Nano and Advanced Materials Engineering, Changwon National University), C. G. Lee (School of Nano and Advanced Materials Engineering, Changwon National University), Bon Heun Koo * (School of Nano and Advanced Materials Engineering, Changwon National University) In this paper, magnetic property and magnetocaloric effect (MCE) in perovskite manganites of the type
La(0.75-X)CeXCa0.25MnO3 (x = 0.0, 0.2, 0.3 and 0.5) synthesized by using the standard solid state reaction method have been reported. From the magnetic measurements as a function of temperature and applied magnetic field, we have observed that the Curie temperature (TC) of the prepared samples strongly dependent on Ce content and was found to be 255, 213 and 150 K for x = 0.0, 0.2 and 0.3, respectively. A large magnetocaloric effect in vicinity of TC has been observed with a maximum magnetic entropy change (|ΔSM|max) of 3.31 and 6.40 J/kgK at 1.5 and 4 T, respectively, for La0.55Ce0.2Ca0.25MnO3. In addition, relative cooling power (RCP) of the sample under the magnetic field variation of 1.5 T reaches 59 J/kg. These results suggest that La0.55Ce0.2Ca0.25MnO3 compound could be a suitable candidate as working substance in magnetic refrigeration at 213 K.
