Surface topology and magnetic properties of FePt alloyed thin films

Kyung Hwan Na, Jong Gab Na, Hi Jung Kim, Pyung Woo Jang, Sung Rae Lee

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

Dependency of Ar pressure on the surface topology and magnetic properties of as-deposited and air-annealed 120 nm thick FePt thin films were investigated. The higher the Ar pressure was, the rougher the surface of as-deposited films became. After annealing in the air, the surface became much rougher which was due to formation of Fe oxide on the surface. The oxidation was much accelerated in the films with rougher surface. This accelerated oxidation resulted in a high order-disorder transformation rate and higher coercivity.

Original languageEnglish
Pages (from-to)1302-1305
Number of pages4
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
Publication statusPublished - 2001 Jul
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11

Keywords

  • Air-annealing
  • FePt film
  • L1 structure
  • Order-disorder transformation
  • Surface topology

ASJC Scopus subject areas

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

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  • Cite this

    Na, K. H., Na, J. G., Kim, H. J., Jang, P. W., & Lee, S. R. (2001). Surface topology and magnetic properties of FePt alloyed thin films. IEEE Transactions on Magnetics, 37(4 I), 1302-1305. https://doi.org/10.1109/20.950824