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Low-temperature ordered CoPtCu/Ag nanocomposite film with (001) texture

Wang Hao Xue Shuang-Xi Wong S. P.

Low-temperature ordered CoPtCu/Ag nanocomposite film with (001) texture

Wang Hao, Xue Shuang-Xi, Wong S. P.
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  • PDF Downloads:  1391
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  • Received Date:  09 October 2006
  • Accepted Date:  29 November 2006
  • Published Online:  20 June 2007

Low-temperature ordered CoPtCu/Ag nanocomposite film with (001) texture

  • 1. (1)湖北大学物理学与电子技术学院暨纳米技术研究中心,武汉 430062; (2)台州学院物理与电子工程学院,临海 317000; (3)香港中文大学电子工程系, 香港

Abstract: CoPtCu/Ag nanocomposite films have been prepared using CoPt/Cu/Ag multilayer precursor by magnetron sputtering and subsequent vacuum thermal annealing. Low-temperature ordered CoPtCu/Ag nanocomposite films with (001) texture have been prepared successfully with the optimized content of Ag and Cu in the films. The CoPtCu/Ag films start ordering at a low annealing temperature of 450℃, which is roughly lower by 150℃ than that needed for most CoPt-based films. Our present study shows that the Ag plays a dominant role in inducing the (001) texture of the film and the Cu additive is very effective to reduce the ordering temperature in CoPtAg system. The Co40Pt36Cu8Ag16 film after annealing at 500℃ exhibits a large perpendicular coercivity of 5.0×105 A/m with a small average grains size of 4—5 nm, implying the potential of the films as future ultrahigh density magnetic recording media.

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