title: Size-controlled synthesis of magnetite nanoparticles.
abstract: Monodisperse magnetite nanoparticles have been synthesized by high-temperature solution-phase reaction of Fe(acac)3 in phenyl ether with alcohol, oleic acid, and oleylamine. Seed-mediated growth is used to control Fe3O4 nanoparticle size, and variously sized nanoparticles from 3 to 20 nm have been produced. The as-synthesized Fe3O4 nanoparticles have inverse spinel structure, and their assemblies can be transformed into gamma-Fe2O3 or alpha-Fe nanoparticle assemblies, depending on the annealing conditions. The reported procedure can be used as a general approach to various ferrite nanoparticles and nanoparticle superlattices.
authors.affiliation: IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA. ssun@us.ibm.com
authors.forename: Shouheng
authors.initials: S
authors.lastname: Sun
authors.forename: Hao
authors.initials: H
authors.lastname: Zeng