Microstructure and Magnetic Properties for Highly Coercive FePt Sputtered Films

Toshiyuki Shima, Koki Takanashi, Guo Qing Li, Shunji Ishio

研究成果: Review article査読

11 被引用数 (Scopus)

抄録

In this paper, we review our recent investigations on the magnetic properties and microstructure of highly coercive FePt films prepared on both MgO (001) and MgO (110) substrates with various film thicknesses (t N). Perpendicularly magnetized FePt (001) film were obtained on MgO (001) substrates, while FePt (101) films with the easy magnetization axis canted from the perpendicular direction to the film plane were obtained on MgO (110) substrates. The film morphology changes from a particulate to a continuous state depending on tN. A drastic decrease in the coercivity has been observed with the percolation of particles for FePt (001) films, when tN exceeds a critical thickness, TC = 45 nm. On the other hand, the gradual decrease of HC with tN has been observed in FePt (101) films and no remarkable change is seen at the critical thickness where the film morphology changes from a particulate to continuous state.

本文言語English
ページ(範囲)1508-1513
ページ数6
ジャーナルMaterials Transactions
44
8
DOI
出版ステータスPublished - 2003 8月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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