Magnetic Phase Transition of MnBi under High Magnetic Fields and High Temperature

DOI Web Site Web Site 9 Citations 26 References
  • Koyama Keiichi
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Onogi Tetsuya
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Mitsui Yoshifuru
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Nakamori Yuko
    Institute for Materials Research, Tohoku University
  • Orimo Shin-ichi
    Institute for Materials Research, Tohoku University
  • Watanabe Kazuo
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University

Search this article

Abstract

Magnetization measurements and differential thermal analysis (DTA) of polycrystalline MnBi were carried out in magnetic fields up to 14 T and in 300–773 K, in order to investigate the magnetic phase transition. The magnetic phase transition temperature (Tt) at a zero magnetic field is 628 K and linearly increases with increasing fields up to 14 T at the rate of 2 KT−1. A metamagnetic transition between the paramagnetic and field-induced ferromagnetic states was observed just above Tt. The exothermic and endothermic peaks were detected in the magnetic field dependence of DTA signals in 626–623 K, which relates to the metamagnetic transition. The obtained results were discussed on the basis of a mean field theory.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 48 (9), 2414-2418, 2007

    The Japan Institute of Metals and Materials

Citations (9)*help

See more

References(26)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top