Itinerant-electron metamagnetic transition in LaFe12B6

S. Fujieda, K. Fukamichi, S. Suzuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

LaFe12B6 (SrNi12B6-type) is an antiferromagnet with a low moment of 0.36 μB/Fe-atom in the ground state. The field-induced first-order transition takes place in a wide range of temperature including below and above the Néel temperature of 35 K. This transition results in a high moment of 1.6 μB/Fe-atom, being characteristics of the itinerant-electron metamagnetic transition. The critical magnetic field of the metamagnetic transition BC increases with increasing temperature except for low temperature ranges, in which the kinetic arrest occurs. Above the arrested temperature, the sign of the temperature dependence of dBC/dT is positive. The metamagnetic transition brings about large magnetocaloric effects, that is, a large negative value of the isothermal magnetic entropy change, ΔSm, and a large positive value of the adiabatic temperature change, ΔTad.

Original languageEnglish
Pages (from-to)403-408
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume421
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Antiferromagnetic LaFeB
  • Kinetic arrest
  • Magnetocaloric effect
  • Metamagnetic transition
  • Spin fluctuation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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