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Browse Journals & Magazines > Magnetics, IEEE Transactions ...> Volume:45 Issue:10 Help

Broadband Ni _{\rm x} Zn _{0.8 - {\rm x}} Cu _{0.2} Fe _{2} O _{4} Electromagnetic Absorber for 1 GHz Application

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10 Author(s)
Jae-Jin Lee ; Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL, USA ; Hong, Yang-Ki ; Seok Bae ; Jalli, J.
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NixZn0.8-xCu0.2Fe2O4 ferrites with various composition (x = 0.45-0.79) were synthesized by the coprecipitation method for broadband and electromagnetic absorbing characteristics. Saturation magnetization decreased as the Ni content increased, while coercivity was elevated. It was found that calculated reflection loss and fractional bandwidth (FBW) changed with the matching thickness and chemical composition of the ferrite. Minimum reflection loss (RL) of -47.05 dB and FBW of 105% were observed at 1 GHz for Ni0.45Zn0.35Cu0.2Fe2O4, which are competitive to those of conventional ferrite and ferrite rubber composite absorbers.

Published in:
Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 10 )

Date of Publication: Oct. 2009

Page(s):
4230 - 4233
ISSN :
0018-9464
INSPEC Accession Number:
10880154
Digital Object Identifier :
10.1109/TMAG.2009.2022502
Product Type:
Journals & Magazines
Date of Current Version :
22 September 2009
Issue Date :
Oct. 2009
Sponsored by :
IEEE Magnetics Society

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