Magnetocaloric effect in La0.75Sr0.25MnO3 manganite

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:322

Article

Pekala, M.¹  Pekala, K.²  Drozd, V.³  Fagnard, J. F.⁴  Vanderbemden, P.⁴ 

[1] Univ Warsaw, Dept Chem, PL-02089 Warsaw, Poland

[2] Warsaw Univ Technol, PL-00662 Warsaw, Poland

[3] Florida Int Univ, Ctr Study Matter Extreme Condit, Miami, FL 33199 USA

[4] Univ Liege, Montefiore Elect Inst, B-4000 Liege, Belgium

关键词: Magnetocaloric effect;    Magnetic refrigeration;    Manganite;    Curie temperature;    Arrott plot;   

DOI  :  10.1016/j.jmmm.2010.06.045

来源: Elsevier

【 摘 要 】

The polycrystalline manganite La0.75Sr0.25MnO3 prepared by an alternative carbonate precipitation route reveals the rhombohedral perovskite structure. Magnetization isotherms measured up to 2 T are used to determine Curie temperature of 332 K by means of Arrott plot. Maximum of magnetic entropy change is found at Curie temperature. The relative cooling power equal to 64 J/kg for 1.5 T magnetic field, is superior as compared to the manganite with the same chemical composition from the solgel method. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

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