Structure and magnetic properties for L10-ordered FeNi films prepared by alternate monatomic layer deposition

T. Shima, M. Okamura, S. Mitani, K. Takanashi

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Alternate monatomic layer (ML) deposition technique has been used to fabricate a metastable L10-ordered phase of FeNi alloys. The films were prepared by alternating Fe (0 0 1) and Ni (0 0 1) MLs on MgO (0 0 1) substrates at various temperatures TS in the range between 80 and 400 °C. It has been found that the degree of long-range order S evaluated by X-ray diffraction increases with TS, and it has a maximum at TS=240 °C. With further increase of TS, S shows a drastic decrease, and almost disappears at TS=280 °C. 280 °C is close to the order-disorder transformation temperature in the thermal equilibrium. The variation of Ku shows the same tendency as that of S, suggesting the formation of L10-ordered FeNi alloy in the range of TS=200-260 °C. Maximum values of S=0.6±0.2 and Ku=6.3×106 (erg/cm3) are obtained at TS=240 °C.

Original languageEnglish
Pages (from-to)2213-2214
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Fe-Ni alloy
  • L1-ordered structure
  • Metastable structure
  • Thin film
  • Uniaxial magnetic anisotropy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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