Synthesis and Characterization of Crystalline FeCo Nanoparticles

Authors: Kim, Chang Woo; Kim, Young Hwan; Cha, Hyun Gil; Lee, Don Keun; Kang, Young Soo

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3417-3421(5)

Publisher: American Scientific Publishers

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Abstract:

The monodispersed FeCo nanoparticles were synthesized with borohydride as a reducing agent by coprecipitation method in aqueous solution. The composition and the size of FeCo nanoparticle was controlled by fitting the molar ratio of starting material, the reaction time and the falling rate. To prepare the crystallized nanoparticles, the amorphous FeCo nanoparticles were annealed at the different temperatures for 1 hr, respectively. The size of the crystalline FeCo nanoparticles was controlled in order to maintain the uniform size of 20nm. The as-annealed FeCo alloy could get the highest Ms value of the powder which has been ever synthesized by coprecipitation or other chemical method. The size- and shape-controlled crystalline FeCo nanoparticles can be applied for spring magnet in order to get exchange coupling effect.

Keywords: SOFT MAGNETIC MATERIAL; FECO ALLOY; NANOCRYSTALLITE; COPRECIPITATION

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2006.024

Publication date: 2006-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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