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Composition‐Mediated Order‐Disorder Transformation in FePt Nanoparticles
Author(s) -
JohnstonPeck Aaron C.,
Cullen David A.,
Tracy Joseph B.
Publication year - 2013
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201300028
Subject(s) - nanoparticle , intermetallic , transformation (genetics) , alloy , composition (language) , order (exchange) , phase (matter) , materials science , computer science , nanotechnology , chemistry , metallurgy , business , organic chemistry , biochemistry , linguistics , philosophy , finance , gene
Heat‐treated alloy FePt nanoparticles transform into L1 0 FePt and mixed L1 0 /L1 2 FePt 3 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.