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Aaron C. Johnston-Peck, David A. Cullen and Joseph B. Tracy Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles Particle & Particle Systems Characterization 30

Version of Record online: 8 JUL 2013 | DOI: 10.1002/ppsc.201300028

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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 L10 FePt nanoparticles.

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