Fe3Si-core/amorphous-C-shell nanocapsules with enhanced microwave absorption

doi:10.1016/j.jmmm.2018.09.095

CORC > 金属研究所 > 中国科学院金属研究所

	Fe3Si-core/amorphous-C-shell nanocapsules with enhanced microwave absorption
	Hua, An 1,3; Pan, Desheng 1,3; Li, Yong 1,3; Luan, Jian 1; Wang, Yu 2; He, Jun 2; Geng, Dianyu 1; Liu, Wei 1; Ma, Song 1; Zhang, Zhidong 1
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2019-02-01
卷号	471 页码:561-567
关键词	Fe3Si nanocapsules Amorphous C shell Arc-discharge Microwave absorption
ISSN号	0304-8853
DOI	10.1016/j.jmmm.2018.09.095
通讯作者	Ma, Song(songma@imr.ac.cn)
英文摘要	Nanoscale heterostructures, like core-shell structures, show attractive microwave-absorption characteristics because of the synergetic effects of their dielectric shells and soft-magnetic cores. A new type of nanocapsules with amorphous C shell encapsulating Heusler soft-magnetic Fe3Si alloy has been designed and synthesized in which Si atoms were doped in the C shell to effectively produce a large amount of Si-C bonds to induce the formation of an amorphous C shell. This further significantly improves the dielectric properties of C shells by enhanced dielectric polarization. These tailored Fe3Si/C nanocapsules, exhibit enhanced microwave-absorption properties because of the desirable impedance match between the amorphous C shell and the soft-magnetic Fe3Si. The optimal Fe3Si/C nanocapsules exhibit a highest absorption intensity of - 68.3 dB at 13 GHz and an absorption bandwidth of 4.6 GHz (for RL lower than -10 dB) for absorber thicknesses of 2.1 mm and 1.4 mm, respectively. This new type of nanocapsules is of potential interest for application as novel microwave-absorption material.
资助项目	Natural Science Foundation of China (NSFC)[51571195] ; Natural Science Foundation of China (NSFC)[51871219] ; Natural Science Foundation of China (NSFC)[51271178] ; Natural Science Foundation of China (NSFC)[51331006] ; Natural Science Foundation of China (NSFC)[51590883] ; National Key R&D Program of China[2017YFA0206301]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000450089600082
资助机构	Natural Science Foundation of China (NSFC) ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130470]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma, Song
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Cent Iron & Steel Res Inst, Div Funct Mat Res, Beijing 100081, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Hua, An,Pan, Desheng,Li, Yong,et al. Fe3Si-core/amorphous-C-shell nanocapsules with enhanced microwave absorption[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2019,471:561-567.
APA	Hua, An.,Pan, Desheng.,Li, Yong.,Luan, Jian.,Wang, Yu.,...&Zhang, Zhidong.(2019).Fe3Si-core/amorphous-C-shell nanocapsules with enhanced microwave absorption.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,471,561-567.
MLA	Hua, An,et al."Fe3Si-core/amorphous-C-shell nanocapsules with enhanced microwave absorption".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 471(2019):561-567.