Low-temperature fabrication of high-coercivity L10 ordered FePt magnetic thin films by sputtering

Y. K. Takahashi*, M. Ohnuma, K. Hono

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

We report that fully ordered L10 FePt magnetic thin films with high coercivity can be fabricated by a simple sputtering method at a substrate temperature of 300°C. Although fcc → L10 ordering proceeds only above 600°C in ex situ annealing of disordered FePt films, the ordering occurs spontaneously by surface diffusion during the sputtering process of FePt alloy upon heating the substrate at 300°C. High coercivity larger than 7 kOe was achieved from the as-sputtered state.

Original languageEnglish
Pages (from-to)L1367-L1369
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume40
Issue number12 B
DOIs
Publication statusPublished - 2001 Dec 15
Externally publishedYes

Keywords

  • Coercivity
  • FePt
  • L1
  • Ordering temperature
  • Surface diffusion

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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