L10-ordered high coercivity (FePt)AgC granular thin films for perpendicular recording

Li Zhang, Y. K. Takahashi, A. Perumal, K. Hono*

*この研究の対応する著者

研究成果: Article査読

158 被引用数 (Scopus)

抄録

We report (FePt)AgC granular thin films for potential applications to ultrahigh density perpendicular recording media, that were processed by co-sputtering FePt, Ag, and C targets on MgO underlayer deposited on thermally oxidized Si substrates. (FePt)1-xAgxyvol%C (0<x<0.2, 0<y<50) films were fabricated on oxidized silicon substrates with a 10 nm MgO interlayer at 450oC. We found that the Ag additions improved the L10 ordering and the granular structure of the FePtC films with the perpendicular coercivity ranging from 26 to 37 kOe for the particle size of 58 nm. The (FePt)0.9Ag0.150vol%C film showed the optimal magnetic properties as well as an appropriate granular morphology for recording media, i.e., average grain size of Dav=6.1 nm with the standard deviation of 1.8 nm.

本文言語English
ページ(範囲)2658-2664
ページ数7
ジャーナルJournal of Magnetism and Magnetic Materials
322
18
DOI
出版ステータスPublished - 2010 9
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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