Effects of annealing condition on the structural and magnetic properties of FePt thin films

Chang Hoi Park, Jong Gab Na, Pyung Woo Jang, Seong Rae Lee

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Equiatomic FePt films were deposited by a dc sputtering method and annealed in the air and in a vacuum at 350C for up to 60 min. The order-disorder transformation occurs almost entirely within 10 min and a very high coercivity of 6.8 kOe could be obtained in the air-annealed films while the transformation occured very slowly in the vacuum-annealed films. This higher transformation rate could be also verified in the X-ray diffraction analysis. The reason for the higher rate seems to be the diffusion of oxygen atoms and possible mechanism was discussed.

Original languageEnglish
Pages (from-to)3034-3036
Number of pages3
JournalIEEE Transactions on Magnetics
Volume35
Issue number5 PART 1
DOIs
Publication statusPublished - 1999

Keywords

  • Annealing in the air
  • Fept film
  • Order-disorder transition rate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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