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

Subodh, G.; Deepu, V.; Mohanan, P.; Sebastian, M. T.
August 2009
Applied Physics Letters;8/10/2009, Vol. 95 Issue 6, p062903
Academic Journal
The present communication investigates the dielectric response of the Sr9Ce2Ti12O36 ceramics loaded high density polyethylene and epoxy resin. Sr9Ce2Ti12O36 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.


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