Magneto-Volume and Tetragonal Elongation Effects on Magnetic Phase Transitions of Body-Centered Tetragonal FeRh<sub>1- x </sub>Pt<sub> x </sub>
作者: Shinji YuasaHideki MiyajimaYoshichika Otani
刊名: Journal of the Physical Society of Japan, 1994, Vol.63 (8), pp.3129-3144
来源数据库: The physical Society of Japan
DOI: 10.1143/JPSJ.63.3129
关键词: FeRhFeRh1- x Ptxbody-centered tetragonal structurefirst-order phase transition
原始语种摘要: Magnetic properties of FeRh1- x Pt x system with body-centered cubic and body-centered tetragonal (bct) structures were studied by means of X-ray diffractometry, magnetometry and Mössbauer spectroscopy, and the phase diagram in a temperature-composition plane was determined. With substituting Pt for Rh, the axial ratio c / a was increased and the bct phase was stabilized. With increasing temperature, the bct alloys with 0.72< x <0.81 underwent a first-order phase transition from the antiferromagnetic state to the ferromagnetic state, while the alloys with 0.3< x <0.72 exhibited a first-order phase transition from the antiferromagnetic state to the paramagnetic state with a volume expansion and a tetragonal lattice distortion. The mechanism of those phase transitions...
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关键词翻译
关键词翻译
  • tetragonal 正方晶系的
  • transition 转移
  • magneto 永磁发电机
  • stabilized 稳定的
  • centered 中心馈电的
  • cubic 三次方程
  • elongation 伸长
  • diffractometry 衍射测量术
  • alloys 多组分胶
  • temperature 温度