title: Synthesis of FePt nanocubes and their oriented self-assembly.
abstract: Monodisperse FePt nanocubes are synthesized at 205 degrees C by controlling decomposition of Fe(CO)5 and reduction of Pt(acac)2 and addition sequence of oleic acid and oleylamine. Different from the assembly of the sphere-like FePt nanoparticles, which shows 3D random structure orientation, self-assembly of the FePt nanocubes leads to a superlattice array with each FePt cube exhibiting (100) texture. Thermal annealing converts the chemically disordered fcc FePt to chemically ordered fct FePt, and the annealed assembly shows a strong (001) texture in the directions both parallel and perpendicular to the substrate. This shape-controlled synthesis and self-assembly offers a promising approach to fabrication of magnetically aligned FePt nanocrystal arrays for high density information storage and high performance permanent magnet applications.
authors.affiliation: IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.forename: Jaemin
authors.initials: J
authors.lastname: Kim
authors.forename: J P
authors.initials: JP
authors.lastname: Liu
authors.forename: Hongyou
authors.initials: H
authors.lastname: Fan
authors.forename: Shouheng
authors.initials: S
authors.lastname: Sun