High-anisotropy nanocomposite films for magnetic recording

D. J. Sellmyer, C. P. Luo, M. L. Yan, Y. Liu

Research output: Contribution to journalConference articlepeer-review

80 Scopus citations

Abstract

This paper presents results on the synthesis and properties of FePt-and CoPt-based high-anisotropy nanocomposite films. These films consist of high anisotropy L10 CoPt or FePt particles embedded in a nonmagnetic matrix such as C, SiO2, or B2O3. The grain size and magnetic properties of these films can be controlled by the processing temperatures and the film compositions. Particularly in the FePt:B2O3 films the c-axes of the FePt grains can be made to align along the film normal direction, resulting in films with perpendicular anisotropy. Temperature-dependence of magnetic properties and activation volumes are investigated to understand the magnetization reversal and thermal-activation effects. The potential of these films as high-density recording media is discussed.

Original languageEnglish (US)
Pages (from-to)1286-1291
Number of pages6
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Keywords

  • High anisotropy
  • High-density recording media
  • Nanocomposite films

ASJC Scopus subject areas

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

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