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A General Strategy for Directly Synthesizing High-Coercivity L10-FePt Nanoparticles

Abstract

It is extremely desirable but challenging to develop a facile solution phase synthesis to directly prepare well-dispersed L10-FePt nanoparticles (NPs) to meet the requirements of advanced magnets in modern industry and information technology. Here, we report a novel strategy to synthesize hard magnetic L10-FePt NPs via controlled co-reduction of Fe(acac)3 and K2PtCl6 in the presence of oleylamine, in which effective control of the magnetic properties and chemical ordering of L10-FePt NPs were achieved by tuning the mole ratio of the precusors, reaction time and temperature. The highest coercivity of 10.5 kOe can be obtained for the NPs synthesized at 350 oC for 8 h, which is much higher than the coercivities reported by the previous studies on solution-synthesized FePt NPs without annealing or the third elemental additive. The reported one-pot synthesis of L10-FePt NPs may provide an ideal class of building blocks for magnetic energy and data-storage applications.

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Publication details

The article was received on 05 Jul 2017, accepted on 10 Aug 2017 and first published on 11 Aug 2017


Article type: Communication
DOI: 10.1039/C7NR04849A
Citation: Nanoscale, 2017, Accepted Manuscript
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    A General Strategy for Directly Synthesizing High-Coercivity L10-FePt Nanoparticles

    W. Lei, Y. Yu, W. Yang, M. Feng and H. Li, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR04849A

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