Self-assembled two-dimensional structure of magnetic cobalt nanocrystals

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	Self-assembled two-dimensional structure of magnetic cobalt nanocrystals
	Shen, CM ; Su, YK ; Yang, HT ; Yang, TZ ; Wang, YP ; Gao, HJ
刊名	ACTA PHYSICA SINICA
	2003
卷号	52 期号:2 页码:483
关键词	ROOM-TEMPERATURE NANOPARTICLES PARTICLES FILMS
ISSN号	1000-3290
通讯作者	Gao, HJ (reprint author), Chinese Acad Sci, Inst Phys, Nanoscale Phys & Devices Lab, Beijing 100080, Peoples R China.
中文摘要	By adjusting the Mn concentration, we systematically investigated the magnetic properties, especially the exchange bias field (H-ex) in Ni-81 Fe-19/Ni100 - x Mn-x bilayers. In the range of 53.4 less than or equal to x less than or equal to 60.0, the largest exchange bias field( similar to 17.5kA/m)was achieved,and at the same time the reduction of magnetic moment due to the Mn diffusion into the Ni81Fe19 layer was lower than 20%. High-angle x-ray diffraction( XRD) showed a variation of Ni-100 (-) Mn-x(x) lattice parameters when altering the Mn content: the more the Mn content, the larger the lattice parameters. It was found that the as-deposited Ni100 - Mn-x(x) films with their lattice parameters close to those of theta-phase of NiMn alloy could be transformed into theta-phase relatively easily. Finally, the exchange bias of the bilayers with different Ni100 - xMnx thicknesses was studied. We first obtain a 8.0 kA/m exchange bias field in the Ni81Fe19 (15.0nm)/Ni-100 (-) Mn-x(x) (9.0nm) bilayers when Mn content increases to 70.6% after annealed at 240degreesC for 5 h, while the magnetic moment of the ferromagnetic layer was nearly unichanged.
收录类别	SCI
语种	中文
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52407]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Shen, CM,Su, YK,Yang, HT,et al. Self-assembled two-dimensional structure of magnetic cobalt nanocrystals[J]. ACTA PHYSICA SINICA,2003,52(2):483.
APA	Shen, CM,Su, YK,Yang, HT,Yang, TZ,Wang, YP,&Gao, HJ.(2003).Self-assembled two-dimensional structure of magnetic cobalt nanocrystals.ACTA PHYSICA SINICA,52(2),483.
MLA	Shen, CM,et al."Self-assembled two-dimensional structure of magnetic cobalt nanocrystals".ACTA PHYSICA SINICA 52.2(2003):483.