铜掺杂一步合成fct结构FePt纳米颗粒

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Abstract L10 structured (FePt)1-x Cux nanoparticles (NPs) were directly prepared by polyol method at 340 ℃. The effects of copper additive on the morphology, structure and chemical ordering of as-prepared FePt NPs were investigated. X ray diffraction results showed that without Cu doping the as-prepared NPs possessed fcc structure and gradually showed typical fct diffraction peaks after increasing the Cu doping concentration. Meanwhile the metallic Cu phase is observed. TEM images exhibited that as-prepared NPs had bigger particles size and wider particle size distribution after introducing Cu additive. Magnetic properties measurement showed that a coercivity of 1300 Oe was obtained when the molar ratio of Cu reached 25. 9% in the (FePt)1-xCux nanoparticles. This study indicated Cu doping has a certain in promoting the phase-transition of FePt nanoparticles.

Key words： Key words：copper dopant fct-structure (FePt)1-x Cux nanoparticles coercivity

Received: 25 November 2013 Published: 11 March 2014

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	Articles by authors
	MU Yu-Ping
	WANG Han-Bin
	LIU Xiang
	ZHANG Jun
	WANG Hao

Cite this article:

MU Yu-Ping,WANG Han-Bin,LIU Xiang, et al. One-Step Preparation of fct-Structure FePt Nanoparticles by Doping Cu[J]. , 2014, 21(1): 12-16.

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http://edit.chinamet.cn/Jweb_jsgncl/EN/ OR http://edit.chinamet.cn/Jweb_jsgncl/EN/Y2014/V21/I1/12

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