Coercivity control of FePt nanoparticles by interfacial disorder

Y. K. Takahashi, S. Okamoto, O. Kitakami, Y. Shimada, K. Hono

Research output: Contribution to journalArticle

1 Citation (Scopus)


Thin disordered layer can be formed by sputter-deposition of alumina on fully ordered L10 FePt nanoparticle assembly, due to plasma damage. The thickness of the disordered layer can be tuned by the sputtering power and deposition time of the alumina target. This partial disordering causes substantial decrease in the coercivity, which may be effective to adjust very high switching field of L10 FePt to practical magnetic recording systems.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalMaterials Transactions
Issue number1
Publication statusPublished - 2006 Jan 1


  • Coercivity
  • FePt
  • Interfacially disorder
  • Nanoparticle

ASJC Scopus subject areas

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

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