中国物理B ›› 1994, Vol. 3 ›› Issue (6): 460-469.doi: 10.1088/1004-423X/3/6/009

• • 上一篇    

MAGNETIC PROPERTIES OF NEW SERIES R-Mo-Fe NITRIDES WITH THE ThMn12-TYPE STRUCTURE AT A LOWER Mo CONTENT

潘琪, 张晓东, 张明厚, 杨应昌   

  1. Department of Physics, Peking University, Beijing 100871, China
  • 收稿日期:1992-12-03 出版日期:1994-06-20 发布日期:1994-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China, and the State Key Laboratory of Magnetism, Chinese Academy of Sciences.

MAGNETIC PROPERTIES OF NEW SERIES R-Mo-Fe NITRIDES WITH THE ThMn12-TYPE STRUCTURE AT A LOWER Mo CONTENT

PAN QI (潘琪), ZHANG XIAO-DONG (张晓东), ZHANG MING-HOU (张明厚), YANG YING-CHANG (杨应昌)   

  1. Department of Physics, Peking University, Beijing 100871, China
  • Received:1992-12-03 Online:1994-06-20 Published:1994-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China, and the State Key Laboratory of Magnetism, Chinese Academy of Sciences.

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摘要： A systematic study has been made on formation condition, crystallographic structure and magnetic properties of RMo1.5Fe10.5Nx, where R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er. The interstitial nitrogen atom effects on Curie temperature, saturation magnetization and magneto-crystalline anisotropy have been investigated. Two important preliminary results have been obtained. (1) A single phase crystallized in the ThMn12-type structure was stabilized with a smaller content of molybdenum, thus, the compounds possess a higher Curie temperature and a larger spontaneous magnetization. (2) A complete system of compounds with 1:12 type structure containing the light rare earth cerium and praseodymium was synthesized, which will be favorable for developing new rare earth hard magnetic materials.

Abstract: A systematic study has been made on formation condition, crystallographic structure and magnetic properties of RMo1.5Fe10.5Nx, where R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er. The interstitial nitrogen atom effects on Curie temperature, saturation magnetization and magneto-crystalline anisotropy have been investigated. Two important preliminary results have been obtained. (1) A single phase crystallized in the ThMn12-type structure was stabilized with a smaller content of molybdenum, thus, the compounds possess a higher Curie temperature and a larger spontaneous magnetization. (2) A complete system of compounds with 1:12 type structure containing the light rare earth cerium and praseodymium was synthesized, which will be favorable for developing new rare earth hard magnetic materials.

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 61.72.J- (Point defects and defect clusters) 75.50.Vv (High coercivity materials) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)