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Electromagnetic Wave Absorption Behavior of NiZn-Ferrite Prepared via Hydrothermal Method

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Abstract:

Ni0.5Zn0.5Fe2O4 ferrite powders were synthesized by a hydrothermal method. The nanoparticles of these materials were mixed with a thermal-plastic polyurethane (TPU)polymer in order to form a suitable composite for electromagnetic wave absorber in a frequency range from 2.0 to 15.0 GHz. The effect of particle size on the reflection loss was investigated by comparing nanosized and microsized powders. The reflection loss as a function of frequency ( f ), thickness of the absorber(d), the real and imaginary part of permittivity (ε’ /ε”) and the real and imaginary part of permeability (μ’/μ”) were obtained by calculation using the Bruggeman effective medium theory. The effect of Co2+, Cu2+, and Mg2+ on the reflection loss was also studied.

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Periodical:

Materials Science Forum (Volumes 480-481)

Pages:

595-602

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.480-481.595

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Online since:

March 2005

Authors:

Cheng-Hsiung Peng, Hong-Wen Wang, Shih-Wei Kan, San-Yuan Chen

Keywords:

Fine Particles, Nanocrystalline Material

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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