高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (2): 288.

• 论文 • 上一篇    下一篇

化合物YCo12-xTix和YFe12-xTix的结构与磁性

王文全1,2, 富泉3, 苏峰1, 王学凤1, 闫羽1, 金汉民1   

  1. 1. 吉林大学物理学院;
    2. 吉林大学超硬材料国家重点实验室, 长春 130023;
    3. 内蒙古师范大学物理系, 呼和浩特010022
  • 收稿日期:2002-05-21 出版日期:2003-02-24 发布日期:2003-02-24
  • 通讯作者: 王文全(1968年出生),男,博士,副教授,从事稀土-过渡金属化合物的研究.E-mail:wenquan-wang@sina.com E-mail:wenquan-wang@sina.com
  • 基金资助:

    吉林大学青年教师基金资助

Structure and Magnetic Properties of Compounds YCo12-xTix and YFe12-xTix

WANG Wen-Quan1,2, FU Quan3, SU Feng1, WANG Xue-Feng1, YAN Yu1, JIN Han-Min1   

  1. 1. College of Physics;
    2. State Key Laboratory for Superhard Materials, Jilin University, Changchun 130023, China;
    3. Department of Physics, Inner Mongolia Normal University, Huhhot 010022, China
  • Received:2002-05-21 Online:2003-02-24 Published:2003-02-24

摘要: 通过X射线衍射分析和磁性测量研究了化合物YCo12-xTix和YFe12-xTix的结构与磁性.结果表明,化合物YCo12-xTix和YFe12-xTix均具有ThMn12型结构,室温下为单轴磁晶各向异性.随着Ti含量的增加,YCo12-xTix的居里温度Tc显著降低,而YFe12-xTix的居里温度Tc几乎不变.所有化合物的饱和磁化强度Ms和磁晶各向异性场Ha随着Ti含量的增加而降低,这可以用双次晶格模型来解释.

关键词: YCo12-xTix, YFe12-xTix, X射线衍射, 磁晶各向异性

Abstract: Structure and magnetic properties of YCo12-xTix and YFe12-xTix compounds have been investigated by using X-ray diffraction and magnetic measurements. It was found that all compounds investigated are almost single phase with the ThMn 12-type structure. X-ray diffraction patterns of magnetically aligned powder samples indicate that the easy magnetization directions(EMD) of YCo12-xTix and YFe12-xTix compounds are along the c-axis at room temperature. The lattice parameters increase monotonically with increasing Ti component for all the compounds investigated. The Curie temperature T c decreases monotonically with increasing Ti component for YCo12-xTix, while Tc of YFe12-xTix is almost independent of Ti component. The saturation magnetization M s decreases with increasing Ti component for both systems. The anisotropy field Ha of YCo12-xTix and YFe12-xTix compounds decreases monotonically with increasing Ti component, which can be understood in terms of a two-sublattice model of anisotropy.

Key words: YCo12-xTix, YFe12-xTix, X-ray diffraction, Magnetocrystalline anisotropy

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