Magnetization reversal process in FePt L10 nanoparticles

S. Okamoto, N. Kikuchi, O. Kitakami, Y. Shimada

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We have studied the magnetization reversals of FePt L10 particles. Lithographically fabricated single FePt particles and well isolated epitaxial FePt L10 nanoparticles have been investigated for a wide range of particle diameters D. Careful analyses of the experiments have revealed that for particles larger than 20 nm the magnetization reversal behaviors are governed by either nucleation or expansion of a reversed domain depending on the temperature, and the coherent rotation mode becomes dominant for D < 20 nm.

Original languageEnglish
Pages (from-to)395-401
Number of pages7
JournalScripta Materialia
Volume53
Issue number4
DOIs
Publication statusPublished - 2005 Aug
Externally publishedYes

Keywords

  • Iron alloys
  • Magnetic anisotropy
  • Magnetic recording
  • Magnetic thin films
  • Platinum-group

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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