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Dielectric response of Sr2Ce2Ti5O15 ceramics reinforced high density polyethylene

G Subodh1,2, V Deepu3, P Mohanan3 and M T Sebastian1,4

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Sr2Ce2Ti5O15 ceramics prepared by solid-state route were employed to fabricate high density polyethylene composites using the melt mixing and hot moulding methods. The microstructural studies of the composites indicated agglomeration for more than 30 vol% loading of the ceramics. The dielectric properties of the composites were studied at radio and microwave frequencies. It is observed that relative permittivity and loss tangent increased with volume fraction of the ceramics. For 40 vol% loading of the ceramic, the composite had relative permittivity of 11 and dielectric loss of 0.006 at 8 GHz. The experimentally observed permittivity was compared with different theoretical models.


PACS

81.05.Mh Cermets, ceramic and refractory composites

77.22.Ch Permittivity (dielectric function)

81.20.Hy Forming; molding, extrusion etc.

81.05.Qk Reinforced polymers and polymer-based composites

77.84.Lf Composite materials

84.40.-x Radiowave and microwave (including millimeter wave) technology

Subjects

Soft matter, liquids and polymers

Electronics and devices

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 22 (21 November 2009)

Received 19 June 2009, in final form 26 September 2009

Published 27 October 2009



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