Microstructure and magnetic properties of FePt-MOx granular films

Taisuke Shiroyama*, Taichi Abe, Yukiko Takahashi, Kazuhiro Hono

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We have studied the microstructures and magnetic properties of FePt-segregant granular films to achieve an ideal media structure on glass substrates for thermally assisted magnetic recording. Although FePt-C granular films show an excellent in-plane structure, it does not have a good surface roughness. Meanwhile, FePt-SiO2 granular films have a smooth surface and an interconnected in-plane microstructure. Therefore, to obtain both a surface with a small roughness and well-isolated small columnar grains, we have selected four metal oxides, MOx (M=Nb, W, Zr and Al) as segregants, which are expected to have a driving force for the phase separation between FePt-C and FePt-SiO2 based on thermodynamic evaluation. In this paper, we introduce the ground for selecting these materials as segregants and then show the microstructure and magnetic properties of FePt-MOx granular films.

本文言語English
論文番号6559101
ページ(範囲)3616-3619
ページ数4
ジャーナルIEEE Transactions on Magnetics
49
7
DOI
出版ステータスPublished - 2013
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
  • 電子工学および電気工学

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