中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2153-2157.doi: 10.1088/1009-1963/13/12/031

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The effect of Pd doped in Ru layer on the interlayer coupling in Co/RuPd multilayers

张爱国, 王荫君, 韩秀峰, 詹文山   

  1. State Key Laboratory for Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:2004-05-25 修回日期:2004-06-23 出版日期:2004-12-17 发布日期:2005-03-17
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60171031).

The effect of Pd doped in Ru layer on the interlayer coupling in Co/RuPd multilayers

Zhang Ai-Guo (张爱国), Wang Yin-Jun (王荫君), Han Xiu-Feng (韩秀峰), Zhan Wen-Shan (詹文山)   

  1. State Key Laboratory for Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2004-05-25 Revised:2004-06-23 Online:2004-12-17 Published:2005-03-17
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60171031).

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摘要： 2.0nmCo/tnmRu$_{1-x}$Pd$_x$ multilayers with x=0, 0.05, 0.08, 0.24, 0.39 and 0.48 were prepared by magnetron sputtering. The spacer layer thickness of both Ru (before doping Pd) and RuPd (after doping Pd) varies from 0.2nm to 1.6nm. Two effects have been investigated: (1) the dependence of the interlayer coupling on the thickness of Ru$_{1-x}$Pd$_x$ as a function of x and (2) the dependence of the interlayer coupling on Pd doping density, x, as a function of thickness of Ru$_{1-x}$Pd$_x$. Our results indicate that the interlayer coupling is strongly dependent on the doping density and the spacer layer thickness. The saturation field $H_s$ increases when very low concentration of Pd doped in the Ru layers and a suitable spacer thickness are adopted.

关键词: interlayer antiferromagnetic coupling, magnetic recording, doping effect

Abstract: 2.0nmCo/tnmRu$_{1-x}$Pd$_x$ multilayers with x=0, 0.05, 0.08, 0.24, 0.39 and 0.48 were prepared by magnetron sputtering. The spacer layer thickness of both Ru (before doping Pd) and RuPd (after doping Pd) varies from 0.2nm to 1.6nm. Two effects have been investigated: (1) the dependence of the interlayer coupling on the thickness of Ru$_{1-x}$Pd$_x$ as a function of x and (2) the dependence of the interlayer coupling on Pd doping density, x, as a function of thickness of Ru$_{1-x}$Pd$_x$. Our results indicate that the interlayer coupling is strongly dependent on the doping density and the spacer layer thickness. The saturation field $H_s$ increases when very low concentration of Pd doped in the Ru layers and a suitable spacer thickness are adopted.

Key words: interlayer antiferromagnetic coupling, magnetic recording, doping effect

中图分类号:  (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))

  • 75.70.Cn
75.50.Ss (Magnetic recording materials) 75.50.Ee (Antiferromagnetics) 81.15.Cd (Deposition by sputtering)