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	Reduction of ordering temperature of self-assembled fept nanoparticles by addition of au and ag
	Gao, Y.; Zhang, X. W.; Qu, S.; You, J. B.; Yin, Z. G.; Chen, N. F.
刊名	Journal of nanoscience and nanotechnology
	2011-12-01
卷号	11期号:12页码:10548-10552
关键词	Fept nanoparticles Ordering temperature Self-assembly Magnetic recording
ISSN号	1533-4880
DOI	10.1166/jnn.2011.4006
通讯作者	Zhang, x. w.()
英文摘要	The [fept](94)au-6 and [fept](90)ag-10 nanoparticle arrays were synthesized on si substrates by a reverse micellar method, combined with plasma treatment and in-situ deposition of a sio2 overlayer, and the post annealing step was performed to drive the face-centered cubic to tetragonal phase transition. these fept nanoparticles exhibit a quasi-hexagonal order with tailored inter-particle spacing and particle size. the effects of the ag and au on the structural and magnetic properties of fept were investigated. the results indicate that both au and ag additives can remarkably enhance the coercivity and reduce the ordering temperature, however, the optimum composition is different for them. the optimum composition is determined to be [fept](94)au-6 and [fept](90)ag-10, respectively, for which the ordering temperature of fept nanoparticles is reduced by similar to 100 degrees c. after 600 degrees c annealing, the [fept](94)au-6 and [fept](90)ag-10 nanoparticles are totally ferromagnetic with apparent larger coercivities of similar to 7.0 koe, which is about 3.8 koe larger than that of the pure fept nanoparticles. the mechanism of the chemical ordering acceleration may be attributed to the defects and strains caused by the au/ag additives.
WOS关键词	MAGNETIC-PROPERTIES ; FILMS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
语种	英语
出版者	AMER SCIENTIFIC PUBLISHERS
WOS记录号	WOS:000299586100047
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2428383
专题	半导体研究所
通讯作者	Zhang, X. W.
作者单位	Chinese Acad Sci, Key Lab Semicond Mat Sci, Inst Semicond, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Gao, Y.,Zhang, X. W.,Qu, S.,et al. Reduction of ordering temperature of self-assembled fept nanoparticles by addition of au and ag[J]. Journal of nanoscience and nanotechnology,2011,11(12):10548-10552.
APA	Gao, Y.,Zhang, X. W.,Qu, S.,You, J. B.,Yin, Z. G.,&Chen, N. F..(2011).Reduction of ordering temperature of self-assembled fept nanoparticles by addition of au and ag.Journal of nanoscience and nanotechnology,11(12),10548-10552.
MLA	Gao, Y.,et al."Reduction of ordering temperature of self-assembled fept nanoparticles by addition of au and ag".Journal of nanoscience and nanotechnology 11.12(2011):10548-10552.

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