Magnetocaloric properties of (MnFeRu)2(PSi) as magnetic refrigerants near room temperature

Takayuki Ohnishi, Kei Soejima, Keiichiro Yamashita, Hirofumi Wada

Research output: Contribution to journalArticlepeer-review

Abstract

We have scaled up the production process of magnetic refrigerants near room temperature. The Mn2−yFey−xRuxP1−zSiz compounds with 0.03 ≤ x ≤ 0.16, y ≈ 0.75, and z ≈ 0.55 were synthesized and their magnetocaloric properties were examined. By changing the compositions and the annealing temperature, the Curie temperature was tuned between 275 and 315 K with 2~3 K steps. All the compounds underwent a first-order magnetic transition accompanied by thermal hysteresis of less than 2 K. The compounds showed excellent magnetocaloric properties: the magnetic entropy change was more than 10 J/K·kg and the refrigerant capacity was about 115 J/kg in a field change of 1.5 T. The detailed instructions to synthesize high-performance (MnFe)2PSi materials are given.

Original languageEnglish
Article number6
JournalMagnetochemistry
Volume3
Issue number1
DOIs
Publication statusPublished - Mar 2017

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Materials Chemistry
  • Electronic, Optical and Magnetic Materials

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