Full X-Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules

doi:10.1016/j.jallcom.2011.06.031

IMR OpenIR

	Full X-Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules
	Liu, Xianguo 1,2,3; Or, Siu Wing 1; Ho, S. L.1; Cheung, Chi Chuen 1; Leung, Chung Ming 1; Han, Zheng 2,3; Geng, Dianyu 2,3; Zhang, Zhidong 2,3
通讯作者	Or, Siu Wing(eeswor@polyu.edu.hk)
	2011-09-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	509 期号:37 页码:9071-9075
摘要	New type of Fe(Mn)/Mn7C3/graphite nanocapsules was prepared by a modified arc discharge technique in ethanol vapor, with Fe(Mn) solid solution nanoparticles as the core, Mn7C3 as the inner shell, and graphite as the outer shell. The Cole-Cole semicircle approach was adopted to explain the ternary dielectric resonance, due to a cooperative consequence of the core/shell/shell interfaces and the dielectric Mn7C3 and C shells. A remarkable increase in the anisotropy energy led to a shift in the natural resonance frequency to 6.6 GHz. Dielectric losses come from the ternary dielectric resonance while magnetic losses were from the magnetic natural resonance. An optimal reflection loss (RL) of -142.1 dB was observed at 12 GHz for 5.0 mm thickness layer. RL exceeding -10 dB was obtained at 6.6-18 GHz for 1.4 mm thickness, covering the whole X band (8-12 GHz), Ku band (12-18 GHz), and some of C band (6.6-8.0 GHz). RL exceeding -20 dB was found at 6-10.6 GHz for 2.2 mm thickness. (C) 2011 Elsevier B. V. All rights reserved.
关键词	Carbon Complex permeability Complex permittivity Electromagnetic wave absorption Nanocapsules Reflection loss
资助者	Hong Kong Polytechnic University ; Ministry of Science and Technology of China
DOI	10.1016/j.jallcom.2011.06.031
收录类别	SCI
语种	英语
资助项目	Hong Kong Polytechnic University[G-YX3 V] ; Ministry of Science and Technology of China[2010CB934603]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000293826800019
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：48[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/321006/103709
专题	中国科学院金属研究所
通讯作者	Or, Siu Wing
作者单位	1.Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xianguo,Or, Siu Wing,Ho, S. L.,et al. Full X-Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2011,509(37):9071-9075.
APA	Liu, Xianguo.,Or, Siu Wing.,Ho, S. L..,Cheung, Chi Chuen.,Leung, Chung Ming.,...&Zhang, Zhidong.(2011).Full X-Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules.JOURNAL OF ALLOYS AND COMPOUNDS,509(37),9071-9075.
MLA	Liu, Xianguo,et al."Full X-Ku band microwave absorption by Fe(Mn)/Mn7C3/C core/shell/shell structured nanocapsules".JOURNAL OF ALLOYS AND COMPOUNDS 509.37(2011):9071-9075.