Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates

Y. K. Takahashi, K. Hono, T. Shima, K. Takanashi

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

We have investigated the microstructures and the magnetic properties of 10nm thick FePt films epitaxially grown on MgO (0 0 1) substrates at various substrate temperatures, Ts. The long-range-order parameter of the L10 structure and the coercivity increased above Ts = 450°C with a drastic change in the film morphology from continuous structure to island-like one. A huge coercivity of 42kOe obtained at T s = 700°C is attributed to complete magnetic isolation of nanometer-scale particles as well as perfect uniaxial alignment of c-axis in the normal direction to the film.

Original languageEnglish
Pages (from-to)248-255
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume267
Issue number2
DOIs
Publication statusPublished - 2003 Dec 1

Keywords

  • Coercivity
  • Epitaxial film
  • FePt
  • Microstructure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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