中国物理B ›› 1996, Vol. 5 ›› Issue (8): 609-613.doi: 10.1088/1004-423X/5/8/006

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FORMATION AND MAGNETIC PROPERTIES OF Dy2Fe17-xMnxC(x = 0-17) PREPARED BY ARC-MELTING

王芳卫, 张泮霖, 沈保根, 严启伟   

  1. State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1995-10-26 出版日期:1996-08-20 发布日期:1996-08-20
  • 基金资助:
    Project supported by the State science and Technology Commission and the National Natural Science Foundation of China.

FORMATION AND MAGNETIC PROPERTIES OF Dy2Fe17-xMnxC(x = 0-17) PREPARED BY ARC-MELTING

WANG FANG-WEI (王芳卫), ZHANG PAN-LIN (张泮霖), SHEN BAO-GEN (沈保根), YAN QI-WEI (严启伟)   

  1. State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China
  • Received:1995-10-26 Online:1996-08-20 Published:1996-08-20
  • Supported by:
    Project supported by the State science and Technology Commission and the National Natural Science Foundation of China.

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摘要： We report on alloys formed by replacing iron with manganese in the compound Dy2Fe17C1.0 Samples were characterized by X-ray diffraction and magnetic measure-ments, The 2:17-type structure can be crystallized in the whole range of manganese substitution. The Curie temperature of the series of Dy2Fe17-xMnxC1.0(x= 0-17) drops down considerably from 515K for x = 0 to about 20K for compounds with high manganese concentration, and the compensation point was observed in a narrow range of x≈4-6. The rapid decrease of the magnetization shows that the manganese substitution is not a simple magnetic dilution to the transition-metal sublattice mo-ment, it indicates that the moment of Mn may be antiparallel to that of Fe. The field dependence of the magnetization of Dy2Fe17-xMnxC1.0 may indicate the existence of the nonlinear magnetic structure for the samples with high Mn conoentrations.

Abstract: We report on alloys formed by replacing iron with manganese in the compound Dy2Fe17C1.0 Samples were characterized by X-ray diffraction and magnetic measure-ments, The 2:17-type structure can be crystallized in the whole range of manganese substitution. The Curie temperature of the series of Dy2Fe17-xMnxC1.0(x= 0-17) drops down considerably from 515K for x = 0 to about 20K for compounds with high manganese concentration, and the compensation point was observed in a narrow range of x≈4-6. The rapid decrease of the magnetization shows that the manganese substitution is not a simple magnetic dilution to the transition-metal sublattice mo-ment, it indicates that the moment of Mn may be antiparallel to that of Fe. The field dependence of the magnetization of Dy2Fe17-xMnxC1.0 may indicate the existence of the nonlinear magnetic structure for the samples with high Mn conoentrations.

中图分类号:  (Methods of materials synthesis and materials processing)

  • 81.20.-n
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 61.66.Fn (Inorganic compounds)