Paper Titles
Synthesis of a New Photochromic ZrO2 Precursor for Preparation of Functional Thin Films
p.175
Low Temperature Sintering of Alumina by CuO-TiO2-Nb2O5 Additives
p.181
A Technique for Permittivity Measurement of Ceramic Powders at Microwave Frequencies
p.185
High Frequency Dielectric Mapping Using Un-Contact Probe for Dielectric Materials
p.189
Evaluation of Characteristics of Composite Electromagnetic Wave Absorbers
p.193
Effect of Lanthanum Oxide Addition on Dielectric Loss and Microstructure of AlN Ceramics
p.197
Preparation and Formation Mechanism of Micrometer-Sized Spherical Single Crystal Particles of Perovskite Oxides by Flame Fusion
p.201
Effect of Powder Properties of Dielectric Filler on the Dielectric Properties of a Ceramics-Polymer Composite
p.205
Dielectric Properties of Phosphate Glasses in the Region from 1 to 10 GHz
p.209

Evaluation of Characteristics of Composite Electromagnetic Wave Absorbers

Article Preview

Abstract:

It is found through simulation that composite electromagnetic wave absorbers made of Ni-Zn ferrite and SiO2 particles, which are isolated in the continuous medium of Ni-Zn ferrite, show good absorption. In particular, absorbers show absorption in the frequency regions both below and above 1 GHz for the mixing ratio of SiO2 of 80 mol%. To simulate the complex permeability of the composite materials, we considered some arrangements of SiO2 in the Ni-Zn ferrite medium. Measured values of complex permeability are close to simulated ones above 1 GHz.

You might also be interested in these eBooks
Electroceramics in Japan IX View Preview

Info:

Periodical:

Key Engineering Materials (Volume 320)

Pages:

193-196

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.320.193

Citation:

Cite this paper

Online since:

September 2006

Authors:

Kenji Sakai, Kiyohiro Hiraki, Hiroki Kusunoki, Takatoshi Kondo, Shinzo Yoshikado

Keywords:

Complex Permeability, Composite Electromagnetic Wave Absorber, Isolated Model, Mechanical Milling Method, Ni-Zn Ferrite, SiO2

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] H. Kusunoki, T. Kondo, K. Hiraki, K. Takada and S. Yoshikado, Key Engineering Materials, 248 (2003), p.161.

Google Scholar

[2] T. Kondo and S. Yoshikado, Ceram. Soc. Japan, 109 (2001), p.326.

Google Scholar

[3] K. Lichtenecker and K. Rother, Phys. A, 32 (1931), p.255. e-mail: syoshika@mail. doshisha. ac. jp, fax : +84-0774-65-6801 SiO2.

Google Scholar