Magnetic properties;;Sintered magnets

作者:刘金芳;罗河烈;潘树明;聂向富;侯登录;
关键词:Magnetic properties;;Sintered magnets
单位:Magnetism Laboratory Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China,Magnetism Laboratory,Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China,General Research Institute for Non-Ferrous Metals,Beijing,China,Department of Block neodymium magnet
http://www.chinamagnets.biz/Neodymium/Block-neodymium-magnet.php Physics,Hebei Normal University,Shijiazhuang City,Hebei Province,China,Department of Physics,Hebei Normal University,Shijiazhuang City,Hebei Province,China,
摘要:<正> The magnetic properties of Nd_(16)Fe_(77)B_7 and Nd_(16)Fe_((61-x))Co_(16)Ga_xB_7(x=0,1,2,4,7)have been measured.Itis found that the remanent magnetization(Br),maximum energy product(BH)_(max)and the Curie temperature(T_c)decrease with the increase of Ga content.The coercive force(He)increases with the increase of Ga contentwhen x is less than 2,but decreases when x>2.At x=2,the coercive force reaches its maximum value.It is alsofound in all the samples investigated that there is a linear relationship between H_c~(1/2)and T~(2/3),which can not beexplained by Gaunt's wall barrier model.The temperature dependence of the calculated values of H_v and(4bf)has been discussed.