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Nd2(Co1-xFex)17-yCr y化合物的结构和磁性研究

苏 峰, 王文全, 王向群, 王学凤, 赵素芬, 杜晓波, 闫 羽, 金汉民   

  1. 吉林大学物理科学学院, 长春 130023
  • 收稿日期:2001-10-29 修回日期:1900-01-01 出版日期:2002-04-26 发布日期:2002-04-26
  • 通讯作者: 苏 峰

A Studies of Structure and Magnetic Properties of CompoundsNd2(Co1-xFex)17-yCr y

SU Feng, WANG Wen-quan, WANG Xiang-qun, WANG Xue-feng, ZHAO Su-fen,DU Xiao-bo, YAN Yu, JIN Han-min   

  1. College of Physics, Jilin University, Changchun 130023, China
  • Received:2001-10-29 Revised:1900-01-01 Online:2002-04-26 Published:2002-04-26
  • Contact: SU Feng

摘要: 利用X射线衍射和磁性测量研究Nd2(Co1-x Fex)17-yCry化合物的结构和磁性. 实验结果表明, 这些化合物都具有Th2Zn17型结构, Cr和Fe替代Nd2Co 17化合物中Co并未改变晶体结构, 但能引起晶格膨胀. 所有化合物在室温下都表现为易面各向异性. 化合物的居里温度 随着Fe含量的增加和稳定元素Cr含量的减小而升高, 在x=0.5和y=3.3时达到最大值, 而后逐渐减小.

关键词: Nd2(Co1-xFex)17-yCry化合物, 居里温度, 晶体结构

Abstract: The structure and magnetic properties of compounds Nd 2(Co1-xFex)17-yCry were investigated by means of X-ray diffraction and magnetic measurements. It was found that all the compounds investigated are of the Th2Zn17-type structu re. The substitution of Cr and Fe for Co doesnt change the crystalline structu re, but leads to an increase of the unit-cell volume. The X-ray diffraction patt erns of the magnetically aligned powder samples indicate that the easy magnetiza tiondirections (EMD) at room temperature are in the basal plane for all Nd2(Co1-xFex) 17-xCry compounds. With increasing content Fe and de creasing Cr content, the Curie temperature TC increases first, reachi ng a maximum at x=0.5 and y=3.3, then decreases monotonically.

Key words: Nd2(Co1-xFex) 17-yCry compounds, Curie temperature, crystalline structure

中图分类号: 

  • O482.5