Oriented L10-FePt nanoparticles and their magnetic properties

K. Sato, B. Bian, T. Hanada, Y. Hirotsu

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The alloying reaction of Fe and Pt and the ordering reaction in nanometer-sized FePt particles was observed by in-situ TEM observation. At the initial stage of annealing, Fe started to dissolved into the Pt particles, then the ordering reaction started to occur simultaneously. These two reactions continued until all the Fe dissolved into the Pt during the annealing. The large magnetic coercivities as large as 815 kA/m were explained by the disappearance of the three-variants domains and the formation of crystallographic single domains.

Original languageEnglish
Pages (from-to)1389-1393
Number of pages5
JournalScripta Materialia
Volume44
Issue number8-9
DOIs
Publication statusPublished - 2001 May 18
Externally publishedYes

Keywords

  • Electron-beam deposition
  • Ferromagnetic hysteresis
  • Nanoparticles
  • Ordering
  • Transmission electron microscopy

ASJC Scopus subject areas

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

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