title: Diffusion-driven crystal structure transformation: synthesis of Heusler alloy Fe3Si nanowires.
abstract: We report fabrication of Heusler alloy Fe(3)Si nanowires by a diffusion-driven crystal structure transformation method from paramagnetic FeSi nanowires. Magnetic measurements of the Fe(3)Si nanowire ensemble show high-temperature ferromagnetic properties with T(c) >> 370 K. This methodology is also successfully applied to Co(2)Si nanowires in order to obtain metal-rich nanowires (Co) as another evidence of the structural transformation process. Our newly developed nanowire crystal transformation method would be valuable as a general method to fabricate metal-rich silicide nanowires that are otherwise difficult to synthesize.
authors.affiliation: Department of Chemistry, KAIST, Daejeon 305-701, Korea.
authors.forename: Kwanyong
authors.initials: K
authors.lastname: Seo
authors.forename: Nitin
authors.initials: N
authors.lastname: Bagkar
authors.forename: Si-in
authors.initials: SI
authors.lastname: Kim
authors.forename: Juneho
authors.initials: J
authors.lastname: In
authors.forename: Hana
authors.initials: H
authors.lastname: Yoon
authors.forename: Younghun
authors.initials: Y
authors.lastname: Jo
authors.forename: Bongsoo
authors.initials: B
authors.lastname: Kim