Control of working temperature of large isothermal magnetic entropy change in La(FexTMySi1-x-y)13 (TM = Cr, Mn, Ni) and la1-zCez(FexMnySi 1-x-y)13

Shun Fujieda, Naoyuki Kawamoto, Asaya Fujita, Kazuaki Fukamichi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The Curie temperature TC of La(FexSi 1-x)13 is increased by a partial substitution of Ni for Fe. On the contrary, TC is decreased by a partial substitution of Cr or Mn. In addition, a partial substitution of Ce for La in La(Fe xMnySi1-x-y)13 causes the further decrease of TC. As a result. La0.65Ce 0.35(Fe0.85Mn0.03Si0.12) 13 exhibits a thermal-induced first-order transition at TC = 60K. This result means that TC of the La1-zCe z(FexMnySi1-x-y)13 is tunable in the temperature range between 60 and 180K by adjusting composition with keeping the itinerant-electron metamagnetic transition. In the magnetic field change from 0 to 4T in the vicinity of TC = 60K, the La 0.65Ce0.35(Fe0.85-Mn0.03Si 0.12)13 shows the isothermal magnetic entropy change ΔSm = -13 J kg-1 K-1 and the relative cooling power RCP = 458 J kg-1. Consequently, the La 1-zCez(FexMnySi1-x-y) 13 compounds are useful for magnetic refrigerants working in a temperature range between 60 and 180 K.

Original languageEnglish
Pages (from-to)482-485
Number of pages4
JournalMaterials Transactions
Volume47
Issue number3
DOIs
Publication statusPublished - 2006 Mar 1

Keywords

  • Itinerant-electron metamagnetic transition
  • Magnetic refrigeration
  • Magnetocaloric effect
  • Relative cooling power

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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