Magnetic properties of MnBi in high magnetic fields and high temperature

Tetsuya Onogi, Keiichi Koyama, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Magnetization measurements of polycrystalline MnBi were carried out in magnetic fields up to 10 T and in the temperature range from 300 to 773 K, in order to clarify the magnetic properties under high magnetic fields and high temperature. The magnetic phase transition temperature (T c) at a zero magnetic field is 633 K, which almost linearly increases by 2.3 KT -1 with increasing fields up to 10 T. Furthermore, a metamagnetic transition was observed just above T c, indicating that the phase transition is first order. The magnetic entropy change is estimated to be 14 J kg -1 K -1 for 2 T at T c using Clausius-Clapayron's equation, which is almost constant for magnetic fields up to 10 T.

Original languageEnglish
Pages (from-to)489-493
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume71
Issue number6
DOIs
Publication statusPublished - 2007 Jun

Keywords

  • First ordered transition
  • Magnetization measurement
  • Metamagnetic transition
  • MnBi compound

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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