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Active and Passive Electronic Components
Volume 2009, Article ID 437130, 6 pages
http://dx.doi.org/10.1155/2009/437130
Research Article

Dielectric Behavior of Ceramic (BST)/Epoxy Thick Films

Laboratoire de Physique du Solide et des Couches Minces (LPSCM), F.S.S, Université Cadi Ayyad, Marrakech BP 2390, Morocco

Received 14 April 2009; Accepted 4 July 2009

Academic Editor: Yalin Lu

Copyright © 2009 N. Hadik et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Composite materials were made by mixing powders of ( and 0.4) ceramics and epoxy resin with various volume fractions (vol%). Dielectric measurements of these composites were performed as a function of filler ratio in the range 100– K at 10 KHz. The dielectric constant of the composite increased with increasing volume fraction varies slightly with temperature. The 20 vol% of BST(0.4)-epoxy composite had the highest dielectric constant of 19.4 and dielectric loss tangent of 0.027. Among the dielectric mixing models presented, the model of Lichtenecker shows the best fit to the experimental data for both composites.