Dielectric response of high permittivity polymer ceramic composite with low loss tangent

Abstract

The present communication investigates the dielectric response of the Sr9 Ce2 Ti12 O36 ceramics loaded high density polyethylene and epoxy resin. Sr9 Ce2 Ti 12 O36 ceramic filled polyethylene and epoxy composites were prepared using hot blending and mechanical mixing, respectively. 40 vol % ceramic loaded polyethylene has relative permittivity of 12.1 and loss tangent of 0.004 at 8 GHz, whereas the corresponding composite using epoxy as matrix has permittivity and loss tangent of 14.1 and 0.022, respectively. The effective medium theory fits relatively well for the observed permittivity of these composites. © 2009 American Institute of Physics.