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Browse Journals & Magazines > Magnetics, IEEE Transactions ...> Volume:47 Issue:10 Help

Enhanced Microwave Magnetic and Attenuation Properties for Barium Ferrite Flaky-Filler Composites

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3 Author(s)
Li, Z.W. ; Temasek Labs., Nat. Univ. of Singapore, Singapore, Singapore ; Yang, Z.H. ; Kong, L.B.

Microwave reflection characteristics as well as high frequency magnetic and dielectric properties have been studied for composites filled with Z-type barium ferrite flakes. Results show that both μ0' and μmax''are enhanced, while ε' is almost the same, as compared to conventional composites. Therefore, the percentage bandwidth WP is significantly widened for the flaky-filler composites; WP achieves 130%-150% for reflection loss RL <; -10&nbsp;dB. In addition, for all composites, two matching frequencies are found. The first matching frequency is attributed to the quarter-wavelength resonator and the second matching frequency is mainly controlled by the values of both μ'(f) and ε'(f) , where μ'/ε'=1/3 .

Published in:
Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 10 )

Date of Publication: Oct. 2011

Page(s):
3712 - 3715
ISSN :
0018-9464
INSPEC Accession Number:
12245038
Digital Object Identifier :
10.1109/TMAG.2011.2158394
Product Type:
Journals & Magazines
Date of Current Version :
26 September 2011
Issue Date :
Oct. 2011
Sponsored by :
IEEE Magnetics Society

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