Thermal annealing effect on magnetism and cation distribution in disordered ZnFe2O4 thin films deposited on glass substrates

Seisuke Nakashima, Koji Fujita*, Katsuhisa Tanaka, Kazuyuki Hirao, Tomoyuki Yamamoto, Isao Tanaka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

The effect of thermal annealing on magnetic properties has been investigated for disordered zinc ferrite (ZnFe2O4) thin films deposited on silica glass substrates using a sputtering method. The magnetization at room temperature is enhanced by annealing at relatively low temperature such as 300 °C and decreased by annealing at higher temperatures. X-ray absorption near edge structures indicate that ZnFe2O4 thin film annealed at 300 °C possesses disordered cation distribution similar to that for as-deposited thin film. It is presumed that the enhancement of magnetization by annealing at 300 °C is due to precipitation of disordered ZnFe2O4 crystal from an amorphous matrix formed in the as-deposited thin film.

Original languageEnglish
Pages (from-to)2543-2545
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • Cation distribution
  • First-principles calculation
  • Thin film
  • XANES
  • Zinc ferrite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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