Kinetics of thermally induced first-order magnetic transition in La(Fe 0.88Si0.12)13 itinerant electron metamagnet

A. Fujita, H. Yako

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A nucleation-growth phenomenon has been investigated in the thermally induced first-order transition between the ferromagnetic and paramagnetic states of La(Fe0.88Si0.12)13 itinerant-electron metamagnetic (IEM) compound by measuring the AC susceptibility. Temperature dependence of the transition rate upon cooling exhibits a Johnson-Mehl-Avrami type variation and the Avrami exponent is determined to be 2.2. The thermal variation of the transition rate is scaled by the cooling rate, indicating that generation and dissipation of the latent heat are important for the kinetics of the growth process of the thermally induced transition.

Original languageEnglish
Pages (from-to)S48-S51
JournalJournal of Alloys and Compounds
Volume577
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2013 Nov 15

Keywords

  • Itinerant-electron metamagnetic transition
  • Johnson-Mehl-Avrami model
  • Magnetocaloric effect
  • Nucleation and growth

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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