Composition-mediated order-disorder transformation in FePt nanoparticles

Aaron C. Johnston-Peck, David A. Cullen, Joseph B. Tracy

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Heat-treated alloy FePt nanoparticles transform into L10 FePt and mixed L10/L12 FePt3 intermetallic phases. Enrichment in Pt in some nanoparticles, rather than intrinsic thermodynamic effects, drives phase segregation. FePt nanoparticles of uniform, equimolar composition are expected to transform into phase-pure, highly ordered L1 0 FePt nanoparticles.

Original languageEnglish
Pages (from-to)678-682
Number of pages5
JournalParticle and Particle Systems Characterization
Volume30
Issue number8
DOIs
StatePublished - Aug 2013

Keywords

  • electron microscopy
  • intermetallic phases
  • iron
  • magnetic materials
  • platinum

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