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American Chemical Society, Nano Letters, 9(10), p. 3643-3647, 2010

DOI: 10.1021/nl102093e

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Diffusion-Driven Crystal Structure Transformation: Synthesis of Heusler Alloy Fe3Si Nanowires

Journal article published in 2010 by Kwanyong Seo, Nitin Bagkar, Si-In Kim, Juneho In, Hana Yoon, Younghun Jo, Bongsoo Kim
This paper is available in a repository.
This paper is available in a repository.

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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.