Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma

doi:10.1016/j.jpcs.2019.01.001

IMR OpenIR

	Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma
	Javid, Muhammad 1; Zhou, Yuanliang 1; Wang, Dongxing 1; Liang, Jingshuang 1; Li, Da 2; Shi, Guimei 3; Shah, Asif 1; Zhou, Lei 1; Zhang, Xuefeng 4; Dong, Xinglong 1; Zhang, Zhidong 2
通讯作者	Dong, Xinglong(dongxl@dlut.edu.cn) ; Zhang, Zhidong(zdzhang@imr.ac.cn)
	2019-06-01
发表期刊	JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN	0022-3697
卷号	129 页码:242-251
摘要	Herein, the spherical Fe@SiO2 nanocapsules (NCs) has been synthesized by a one-step way of DC arc-discharge plasma under a mixture atmosphere of H-2 and Ar. The high energy states of excited ions (Ar, H, Fe, Si) within plasma region are in situ recorded by online optical emission spectroscopy (OES) and become visible evidence for the energy conditions in the fabrication of Fe@SiO2 NCs. It indicates that the evaluated electron temperature of plasma reaches up to 3 x 10(4) K (similar to 2.6 eV) and can significantly influence the characters of the final product of Fe@SiO2. Magnetic measurement reveals that Fe@SiO2 NCs is dominant ferromagnetism exhibiting partial transition into superparamagnetism at T-B = 160 K. Electromagnetic parameters (permittivity, permeability) in frequency range of 2-18 GHz show that an appropriate impedance matching has been established in Fe@SiO2/paraffin composite, which brings about excellent reflection loss (RL) of -6/.6 dB at 9.3 GHz with thickness of 2.81 mm, and a wide bandwidth from 6 to 18 GHz with RL <= - 10 dB. The significant impact of a SiO2 layer on the electromagnetic performances of Fe@SiO2 NCs has been emphasized here, with respect to behaviors of the counterpart, i.e. pure Fe nanoparticles (NPs).
关键词	Fe@SiO2 NCs Fe NPs Arc-plasma Magnetic behavior Electromagnetic parameter Reflection loss
资助者	National Natural Science Foundations of China
DOI	10.1016/j.jpcs.2019.01.001
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundations of China[51331006] ; National Natural Science Foundations of China[51271044] ; National Natural Science Foundations of China[51171033]
WOS研究方向	Chemistry ; Physics
WOS类目	Chemistry, Multidisciplinary ; Physics, Condensed Matter
WOS记录号	WOS:000466250300030
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/133229
专题	中国科学院金属研究所
通讯作者	Dong, Xinglong; Zhang, Zhidong
作者单位	1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Elect Beams, Minist Educ, Sch Mat Sci & Engn, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Shenyang Univ Technol, 111,Shenliao West Rd, Shenyang 110870, Liaoning, Peoples R China 4.Hangzhou Dianzi Univ, Innovat Ctr Adv Mat, Hangzhou 310012, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Javid, Muhammad,Zhou, Yuanliang,Wang, Dongxing,et al. Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2019,129:242-251.
APA	Javid, Muhammad.,Zhou, Yuanliang.,Wang, Dongxing.,Liang, Jingshuang.,Li, Da.,...&Zhang, Zhidong.(2019).Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,129,242-251.
MLA	Javid, Muhammad,et al."Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 129(2019):242-251.