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Electromagnetic wave absorption properties of mechanically mixed Nd2Fe14B/C microparticles
Liu, Xianguo1,2,3; Or, Siu Wing1; Ho, S. L.1; Geng, Dianyu2,3; Xie, Zhigao2,3; Wang, Han2,3; Zhang, Zhidong2,3
Corresponding AuthorOr, Siu Wing(eeswor@polyu.edu.hk)
2011-02-10
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume509Issue:6Pages:2929-2932
AbstractNd2Fe14B/C microparticles were prepared by a mechanical mixing technique using a weight ratio of 2:1. Paraffin-bonded Nd2Fe14B/C composites were fabricated using 40 wt% microparticles, and their electromagnetic wave absorption properties were studied and compared with those of the paraffin-bonded Nd2Fe14B composites in the 2-18 GHz frequency range and for 1-5 mm thickness. The Nd2Fe14B/C-paraffin composites exhibit dual dielectric resonance in complex relative permittivity (epsilon(r)) and essentially flat response in complex relative permeability (mu(r)) rather than showing an abrupt change in both epsilon(r) and mu(r) as in the Nd2Fe14B-paraffin composites. The results are ascribed to the increased electrical resistivity in the Nd2Fe14B/C-paraffin composites and the protection on the magnetic properties of the Nd2Fe14B microparticles at 2-18 GHz by the presence of the C phase. Large reflection loss (RL) exceeding -10 dB and an optimal RL of -13.2 dB are achieved in the Nd2Fe14B/C-paraffin composites from 9.6 to 18 GHz at a thickness of 1.4-2.6 mm and at 18 GHz at a thickness of 1.4 mm, respectively. (C) 2010 Elsevier B.V. All rights reserved.
KeywordCarbon Complex permeability Complex permittivity Electromagnetic wave absorption Nd2Fe14B Reflection loss
Funding OrganizationNational Basic Research Program of China ; Ministry of Science and Technology of China ; National Natural Science Foundation of China ; Hong Kong Polytechnic University
DOI10.1016/j.jallcom.2010.11.161
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China[2010CB934603] ; Ministry of Science and Technology of China ; National Natural Science Foundation of China[50831006] ; National Natural Science Foundation of China[50701045] ; Hong Kong Polytechnic University[G-YX3V]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000287058100058
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/105480
Collection中国科学院金属研究所
Corresponding AuthorOr, Siu Wing
Affiliation1.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
Recommended Citation
GB/T 7714
Liu, Xianguo,Or, Siu Wing,Ho, S. L.,et al. Electromagnetic wave absorption properties of mechanically mixed Nd2Fe14B/C microparticles[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2011,509(6):2929-2932.
APA Liu, Xianguo.,Or, Siu Wing.,Ho, S. L..,Geng, Dianyu.,Xie, Zhigao.,...&Zhang, Zhidong.(2011).Electromagnetic wave absorption properties of mechanically mixed Nd2Fe14B/C microparticles.JOURNAL OF ALLOYS AND COMPOUNDS,509(6),2929-2932.
MLA Liu, Xianguo,et al."Electromagnetic wave absorption properties of mechanically mixed Nd2Fe14B/C microparticles".JOURNAL OF ALLOYS AND COMPOUNDS 509.6(2011):2929-2932.
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