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Effects of the Sol-concentration on the Structural and Dielectric Properties of Pb0.3Sr0.7TiO3 Thin Films derived by Sol-gel Method

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5 Author(s)
Dongyi Zhou ; School of Material Science and Engineering, Shanghai University, Shanghai 200072, P.R. China ; Wenbiao Wu ; Dengren Jin ; Jinrong Cheng
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Pb0.3Sr0.7TiO3(PST) thin films were deposited on Pt coated Si(100) substrates by sol-gel techniques using different sol-concentrations. The structural and dielectric characteristics of PST thin films as a function of the sol-concentration were investigated. PST thin films reveal a columnar texture through the thickness when the sol-concentration is lower than 0.3 M. PST thin films derived from 0.35 M sol show better dielectric characteristics with the dielectric constant, dielectric loss, tunability and FOM of 206, 0.01009, 47.5% and 47.07, respectively. The temperature dependence of the dielectric constant, dielectric loss and tunability of PST thin films were investigated in the temperature range of -140~120 exhibiting a dielectric peak of around -45 .

Published in:

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

Date of Conference:

27-31 May 2007