Effects of Nd Substitution on Magnetic and Magneto-optical Properties of TbCo/Cr Films

CHENG Weiming~1 LI Zuoyi~(1*) YANG Xiaofei~1 JIN Fang~1 HUANG Zhixin~2 LIN Gengqi~1 CHENG Xiaomin~1 (1.Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China; 2.Department of Physics,Huazhong Normal University,Wuhan 430079,China)

摘 要：<正>NdTbCo/Cr amorphous films with high perpendicular magnetic anisotropy were prepared onto glass substrates by rf magnetron sputtering.The effects of Nd substitution on the magnetic and magneto-optical properties of TbCo/Cr films were investigated.It was found that partial Tb substitution by Nd would increase the saturation magnetization and the Kerr rotation angle,change the temperature dependence of magneto-optical characteristics.These results can be explained by the ferrimagnetic structure of the rare earth-transition metal alloy.When the magnetic layer composition was(Nd_0.265Tb_0.735)₃₁Co₆₉,a saturation magnetization of 247 emu/ cm³ and a coercivity of 3.8 kOe at room temperature could be obtained.

关键词：