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Large Magnetic Entropy Change in La0.55Ce0.2Ca0.25MnO3 Perovskite
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  • Large Magnetic Entropy Change in La0.55Ce0.2Ca0.25MnO3 Perovskite
  • Large Magnetic Entropy Change in La0.55Ce0.2Ca0.25MnO3 Perovskite
저자명
Anwar. M.S.,Kumar. Shalendra,Ahmed. Faheem,Arshi. Nishat,Kim. G.W.,Lee. C.G.,Koo. Bon-Heun
간행물명
Journal of magnetics
권/호정보
2011년|16권 4호|pp.457-460 (4 pages)
발행정보
한국자기학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, magnetic property and magnetocaloric effect (MCE) in perovskite manganites of the type $La_{(0.75-X)}Ce_XCa_{0.25}MnO_3$ (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 ($T_C$) 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 $T_C$ has been observed with a maximum magnetic entropy change (${mid}{Delta}S_M{mid}_{max}$) of 3.31 and 6.40 J/kgK at 1.5 and 4 T, respectively, for $La_{0.55}Ce_{0.2}Ca_{0.25}MnO_3$. 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 $La_{0.55}Ce_{0.2}Ca_{0.25}MnO_3$ compound could be a suitable candidate as working substance in magnetic refrigeration at 213 K.