Study on Composition Distribution and Ferromagnetism of Monodisperse FePt Nanoparticles |
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Authors: | HB Wang H Wang J Zhang FJ Yang YM Xu Q Li |
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Affiliation: | (1) Faculty of Physics and Electronic Technology, Hubei University, 430062 Wuhan, People’s Republic of China;(2) Department of Physics, The Chinese University of Hong Kong, Hong Kong, People’s Republic of China; |
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Abstract: | Monodisperse FePt nanoparticles with size of 4.5 and 6.0 nm were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in benzylether. The crystallography structure, size, and composition of the FePt nanoparticles were examined by X-ray diffraction and transmission electron microscopy. Energy dispersive X-ray spectrometry measurements of individual particles indicate a broad compositional distribution in both the 4.5 and 6 nm FePt nanoparticles. The effects of compositional distribution on the phase-transition and magnetic properties of the FePt nanoparticles were investigated. |
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Keywords: | FePt Nanoparticles Compositional distribution Magnetic properties |
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