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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0059

    • Keywords

       

      Entropy change; magnetic property; magnetocaloric effect; magnetic refrigerant material.

    • Abstract

       

      We studied the effect of Eu$^{3+}$ substitution on the structural, magnetic and magnetocaloric properties of La$_{0.7-x}$Eu$_x$Ba$_{0.3}$MnO$_3$ (x = 0, 0.02, 0.04, 0.06 and 0.08) (LEBMO). The material is prepared by solid-state sintering method. X-ray diffraction and structural refinement parameters indicate that all the synthesized samples have single-phase hexagonal structure. Magnetic measurements indicate that Curie temperature ($T_C$) of the samples decrease with increasing Eu$^{3+}$ content, because of the weakening of double exchange interaction. All samples present a second-order ferromagnetic to paramagnetic phase transition. Magnetic entropy change (${\Delta}S_M$) of the samples increases as the Eu$^{3+}$ content enhance. When x = 0.08, the $T_C$ of the sample is 258.6 K and the maximum value of ${\Delta}S_M$ reaches 3.27 J kg$^{-1}$ K$^{-1}$ at 5 T of a magnetic field. These results indicate that the material can be used as an ideal working material for the normal temperature magnetic refrigeration.

    • Author Affiliations

       

      BINLONG PAN XINYAO LUO JIEYANG FANG QIONG WU NENGJUN YU YUNDAN YU MINXIANG PAN HANGFU YANG1 HONGLIANG GE

      1. Magnetism Key Laboratory of Zhejiang Province, China Jiliang University, Hangzhou 310018, China

    • Dates

       
      Published
      27 March 2023
      Manuscript received
      20 July 2022
      Accepted
      25 October 2022
      Final version published online
      27 March 2023

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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