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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 8    No. 2    June 1998

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MAGNETIC PHASE TRANSITIONS AND MAGNETIC PROPERTIES OF Nd3(Fe,Mo)29 COMPOUND AND ITS NITRIDE
Pan Hongge1 Wang Xinhua1 ChenYun1 and Chen Changpin1 Yang Fuming2

1.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China;
2.State Key Laboratoryfor Magnetism, Institute ofPhysics, Chinese Academy of Sciences, Beijing100080, P. R. China

Abstract:Iron-rich ternary intermetallic compound Nd3(Fe,Mo)29 with the Nd3(Fe,Ti)29-type monoclinic structure and its nitride were prepared. The intrinsic magnetic properties, magnetic phase transitions, and the magnetocrystalline anisotropy, have been investigated. The results show that the Curie temperature of Nd3(Fe,Mo)29 nitride is 675 K, which is 70.9% higher than that of parent compound (395 K), the saturation magnetization σS and anisotropy fields HA are 151.0 Am2/kg and 14.0 T at 4.2 K, 116.0 Am2/kg and 1.6 T at 300K for Nd3(Fe,Mo)29 compound, 161.0Am2/kg and 18.0T at 4.2K, 143.5Am2/kg and 4.2T at 300 K for Nd3(Fe,Mo)29 NX nitride, respectively; the magnetocrystalline anisotropy of the Nd3(Fe,Mo)29 compound is planar above about 230K and easy cone from 4.2K to 230K, after nitrogenation, the spin reorientation phenomenon was no longer observed.

 

Key words: magnetic properties magnetic phase transitions Nd3(Fe,Mo)29 Nd3(Fe,Mo)29

ISSN 1672-7029
CN 43-1423/U

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