Magnetocaloric effect in the ordered double perovskite Sr 2FeMo1-xWxO6

W. Zhong*, W. Liu, X. L. Wu, N. J. Tang, W. Chen, Chak Tong AU, Y. W. Du

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The effects of B-site cations substitution and antisite (AS) defects on the Curie temperature (TC) and the magnetocaloric effect in the double perovskites Sr2FeMo1-xWxO6 (0 ≤ x ≤ 0.5) prepared by mechanical alloying have been investigated. With a small amount of W doping, not only the magnetization but also the magnetic entropy change (|SM|) have been enhanced. The Curie temperature has been analyzed by two methods: extrapolation and derivative. The experimental results indicate that TC decreases with increasing W substitution independently of the method used to obtain TC. The maximum of the magnetic entropy change peaks at the TC obtained by the derivative method, and a large magnetic entropy change (∼ 1.32 J/kg K) is obtained at 381 K in the sample Sr2FeMo1-xW xO6 (x=0.35) by changing the applied magnetic field by 10 kOe.

Original languageEnglish
Pages (from-to)157-162
Number of pages6
JournalSolid State Communications
Volume132
Issue number3-4
DOIs
Publication statusPublished - Oct 2004

Scopus Subject Areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

User-Defined Keywords

  • A. Double perovskite
  • A. Magnetically ordered materials
  • D. Magnetocaloric effect

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