Sm substitution effects on the magnetic and magneto-optical properties of TbCo/Cr films

Zhixin Huang; Zuoyi Li; Gengqi Lin; Xiaofei Yang; Haomin Wang; Fang Jin; Xiaomin Cheng; Xiaohong Xu; Zheng Li

doi:10.1117/12.510256

9 April 2003 Sm substitution effects on the magnetic and magneto-optical properties of TbCo/Cr films

Zhixin Huang, Zuoyi Li, Gengqi Lin, Xiaofei Yang, Haomin Wang, Fang Jin, Xiaomin Cheng, Xiaohong Xu, Zheng Li

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510256
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

In order to meet the requirements of high saturation magnetization (Ms) and large coercivity (Hc) at room temperature for hybrid recording, the TbCo/Cr films with perpendicular anisotropy were prepared by an r.f. magnetron sputtering system without applying bias voltage. The influence of sputtering conditions and the effects of Sm substitution on the magnetic and magneto-optical properties of TbCo/Cr films were studied. It was found that although the Hc of TbCo/Cr could be optimized by choosing suitable sputtering parameters, but the partial Tb substituted by Sm will directly affect the magnitude of saturation magnetization Ms and the Kerr rotation angle 0_k. This can be explained with the feeri-magnetical structure of RE-TM alloy. Under the optimized sputtering conditions, when the magnetic layer composition was (Sm_0.343Tb_0.657)₃₁Co₆₉, the Ms as high as 385emu/cm³ and the Hc as high as 4.7KOe at room temperature were obtained.

Citation Download Citation

Zhixin Huang, Zuoyi Li, Gengqi Lin, Xiaofei Yang, Haomin Wang, Fang Jin, Xiaomin Cheng, Xiaohong Xu, and Zheng Li "Sm substitution effects on the magnetic and magneto-optical properties of TbCo/Cr films", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510256

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