Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

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

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

Structural and magnetic properties of air-annealed Fe1-x Ptx films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface.

Original languageEnglish
Pages (from-to)1312-1314
Number of pages3
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

ASJC Scopus subject areas

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

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