Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method

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	Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method
	You JB; Zhang XW; Yin ZG
刊名	nanoscale research letters
	2010
卷号	5 期号:1 页码:1-6
关键词	FePt nanoparticles Reverse micelles Self-assembly Interparticle exchange coupling Magnetic recording FILMS ANISOTROPY FUTURE LIMITS MEDIA
通讯作者	zhang, xw, chinese acad sci, inst semicond, key lab semicond mat sci, beijing 100083, peoples r china. e-mail address: xwzhang@semi.ac.cn
合作状况	其它
英文摘要	fept nanoparticles with average size of 9 nm were synthesized using a diblock polymer micellar method combined with plasma treatment. to prevent from oxidation under ambient conditions, immediately after plasma treatment, the fept nanoparticle arrays were in situ transferred into the film-growth chamber where they were covered by an sio2 overlayer. a nearly complete transformation of l1(0) fept was achieved for samples annealed at temperatures above 700 a degrees c. the well control on the fept stoichiometry and avoidance from surface oxidation largely enhanced the coercivity, and a value as high as 10 koe was obtained in this study. an evaluation of magnetic interactions was made using the so-called isothermal remanence (irm) and dc-demagnetization (dcd) remanence curves and kelly-henkel plots (delta m measurement). the delta m measurement reveals that the resultant fept nanoparticles exhibit a rather weak interparticle dipolar coupling, and the absence of interparticle exchange interaction suggests no significant particle agglomeration occurred during the post-annealing. additionally, a slight parallel magnetic anisotropy was also observed. the results indicate the micellar method has a high potential in preparing fept nanoparticle arrays used for ultrahigh density recording media.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-04-04t14:35:50z no. of bitstreams: 1 72.pdf: 442321 bytes, checksum: 76ca1cd8b12317835a70986db7a7e4e1 (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-04-04t14:47:54z (gmt) no. of bitstreams: 1 72.pdf: 442321 bytes, checksum: 76ca1cd8b12317835a70986db7a7e4e1 (md5); made available in dspace on 2010-04-04t14:47:54z (gmt). no. of bitstreams: 1 72.pdf: 442321 bytes, checksum: 76ca1cd8b12317835a70986db7a7e4e1 (md5) previous issue date: 2010; national high-tech r&d programme of china 2006aa03z306; national natural science foundation of china 50601025 60806044; 其它
学科主题	半导体材料
收录类别	SCI
资助信息	national high-tech r&d programme of china 2006aa03z306; national natural science foundation of china 50601025 60806044
语种	英语
公开日期	2010-04-04
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/10200]
专题	半导体研究所_中科院半导体材料科学重点实验室
推荐引用方式 GB/T 7714	You JB,Zhang XW,Yin ZG. Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method[J]. nanoscale research letters,2010,5(1):1-6.
APA	You JB,Zhang XW,&Yin ZG.(2010).Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method.nanoscale research letters,5(1),1-6.
MLA	You JB,et al."Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method".nanoscale research letters 5.1(2010):1-6.