The magnetocaloric effect in the vicinity of compensation temperature of ferrimagnetic DyCo4Al alloy

  • Shengcan Ma
  • Zhenchen Zhong
  • Dunhui Wang
  • Junming Luo
  • Jilin Xu
  • Youlin Huang
  • Yuhua Hou
  • Jun He
  • Qingqi Cao
  • Youwei Du
Regular Article

Abstract

The magnetic and magnetocaloric properties in ferrimagnetic DyCo4Al alloy are investigated in the vicinity of compensation temperature. A compensation temperature closed to room temperature is observed due to the spin-offset. On both sides of compensation temperature, the magnetization presents the abrupt change. As a consequence, two successive positive and negative magnetic entropy change peaks are obtained for this alloy. The appreciable magnetic entropy change values with a very wide refrigerant temperature interval (~200 K) corresponding to the positive magnetic entropy change peak would make this alloy suitable to be used in a magnetic refrigerator.

Keywords

Solid State and Materials 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Shengcan Ma
    • 1
    • 2
  • Zhenchen Zhong
    • 1
  • Dunhui Wang
    • 2
  • Junming Luo
    • 1
  • Jilin Xu
    • 1
  • Youlin Huang
    • 1
  • Yuhua Hou
    • 1
  • Jun He
    • 3
  • Qingqi Cao
    • 2
  • Youwei Du
    • 2
  1. 1.School of Material Science and Engineering, Nanchang Hangkong UniversityNanchangP.R. China
  2. 2.Department of PhysicsNanjing UniversityNanjingP.R. China
  3. 3.Department of mathematics and physicsInformation Engineering UniversityZhengzhouP.R. China

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