Magnetism of Body-Centered Tetragonal FeRh_<1-x>Pd_x Alloys (I) Magnetic Properties

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概要

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• Crystalline structures and magnetic properties of the FeRh_<1-x>Pd_x system were investigated. Substitution of Pd for Rh stabilized body-centered tetragonal (bct) structure of the ordered CuAu-type with increasing axial ratio c/a from 1.18 to 1.36. The bct alloys in the range x=0.530〜0.61 exhibited a first-order phase transition from antiferromagnetic to ferromagnetic state, while the bct alloys with x<0.530 exhibited a first-order phase transition from antiferromagnetic to Curie paramagnetic state. Both the axial ratio and the volume increased abruptly at the transitions. A new ferromagnetic phase with orthorhombic structure with the space group C_<mmm> was found in the bct alloys with x=0.525〜0.61 below room temperature. This ferromagnetic phase possesses a larger magnetic moment than that of the bct phase. Reduction of the crystalline symmetry may have enhanced the magnetic moment.

• 社団法人日本物理学会の論文
• 1995-12-15

著者

• Yuasa Shinji

  Department Of Physics Faculty Of Science And Technology Keio University

• Sakuma A

  Hitachi Metals Ltd. Saitama

• Sakuma Akimasa

  Magnetic & Electronic Materials Research Laboratory Hitachi Metal Ltd

• Miyajima Hideki

  Department Of Physics Faculty Of Science And Technology Keio University

• Otani Yoshichika

  Department of Physics, Faculty of Science and Technology, Keio University

• Otani Y

  Tohoku Univ. Sendai

• Otani Yoshichika

  Department Of Physics Faculty Of Science And Technology Keio University

• Sakuma Akimasa

  Advanced Electronics Research Laboratory Hitachi Metals Ltd.

• Otani YoshiChika

  Department of Material Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, People's Republic of China

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