Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2361176
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Dielectric properties of SrTiO3-Pt (platinum) composites prepared using conventional ceramic method were investigated. Dense complex ceramics were obtained without chemical reaction between SrTiO3 and Pt during sintering processes. The relative permittivity (epsilon(r)) of SrTiO3 was increased by the addition of Pt particles nearly up to the percolation threshold of 27.8 vol % as predicted using normalized percolation theory. The maximum epsilon(r) of 2150 at 1 MHz was obtained for the composite including 27 vol % Pt due to the increased electric field around Pt particles. Using finite difference time domain method, the increase of electric field in the direction of applied electric field was confirmed visually in the vicinity of the embedded metal particles. (c) 2006 American Institute of Physics.
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