Effects of thickness and high magnetic field on the microstructure and magnetic properties of FeNi-SiO2 nanoparticle composite films

doi:10.1016/j.matdes.2016.08.067

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of thickness and high magnetic field on the microstructure and magnetic properties of FeNi-SiO2 nanoparticle composite films
	Ma, Yonghui 1,2; Li, Guojian 1; Wang, Jianhao 1; Zhao, Yue 1; Wang, Kai 1; Wang, Qiang 1
刊名	MATERIALS & DESIGN
	2016-12-05
卷号	111 页码:17-24
关键词	Nanoparticle composite film High magnetic field Magnetic properties Co-evaporation
ISSN号	0264-1275
DOI	10.1016/j.matdes.2016.08.067
通讯作者	Li, Guojian(gjli@epm.neu.edu.cn)
英文摘要	In order to obtain uniform distribution of nanoparticles with various thicknesses, FeNi-SiO2 nanoparticle composite films have been fabricated by co-evaporation using molecular beam vapor deposition method. Meanwhile, insitu high magnetic field is used to tune the growth of nanoparticles. The films are formed with the FeNi nanoparticles embedded in dielectric SiO2. The size of nanoparticles is observed to increase with the film thickness, however, diameter of the nanoparticles remains in the range of 3-5 nm and distributes uniformly in the film whose thicknesses is within the range of 15-100 nm. High magnetic field is found to promote the aggregation of FeNi nanoparticles and helps diffusing through the SiO2 matrix to the film boundaries. This leads to a refinement of nanoparticle size. Magnetic anisotropy of the 0 T films due to the existence of two phases and the shape anisotropy does not change to isotropy with applying high magnetic field. Coercivity still remains at about 9 Oe for all the films. Saturation magnetization is increased with increasing thickness and applying high magnetic field. This means that high magnetic field has a strong effect on the improvement of the magnetization saturation and, at the same time, the refinement of nanoparticle sizes. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51425401] ; Fundamental Research Funds for Central Universities[N140902001]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000386869300003
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/123389]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Guojian
作者单位	1.Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Yonghui,Li, Guojian,Wang, Jianhao,et al. Effects of thickness and high magnetic field on the microstructure and magnetic properties of FeNi-SiO2 nanoparticle composite films[J]. MATERIALS & DESIGN,2016,111:17-24.
APA	Ma, Yonghui,Li, Guojian,Wang, Jianhao,Zhao, Yue,Wang, Kai,&Wang, Qiang.(2016).Effects of thickness and high magnetic field on the microstructure and magnetic properties of FeNi-SiO2 nanoparticle composite films.MATERIALS & DESIGN,111,17-24.
MLA	Ma, Yonghui,et al."Effects of thickness and high magnetic field on the microstructure and magnetic properties of FeNi-SiO2 nanoparticle composite films".MATERIALS & DESIGN 111(2016):17-24.