Microstructure and magnetic properties of FePt-SiO2 granular films with Ag addition

T. O. Seki, Y. K. Takahashi*, K. Hono

*この研究の対応する著者

研究成果: Article査読

50 被引用数 (Scopus)

抄録

Perpendicularly anisotropic L 10 -ordered FePt-SiO2 granular films with an average grain size of 15 nm and a relatively narrow size distribution were prepared by cosputtering Fe, Pt, and SiO2 on MgO (001) substrates at 700 °C. By reducing the substrate temperature to 500 °C, the average grain size was further refined to 6.2 nm with a standard deviation of 1.7 nm; however, the FePt particles remained as an A1 disordered phase. Alloying Ag to the FePt particles and increasing the Ar gas pressure in the sputtering chamber were found to be both beneficial for enhancing the L 10 ordering while keeping the fine granular structure.

本文言語English
論文番号023910
ジャーナルJournal of Applied Physics
103
2
DOI
出版ステータスPublished - 2008
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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