Title :
Effects of the Sol-concentration on the Structural and Dielectric Properties of Pb0.3Sr0.7TiO3 Thin Films derived by Sol-gel Method
Author :
Zhou, Dongyi ; Wu, Wenbiao ; Jin, Dengren ; Cheng, Jinrong ; Meng, Zhongyan
Author_Institution :
Shanghai Univ., Shanghai
Abstract :
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 .
Keywords :
dielectric losses; dielectric thin films; lead compounds; permittivity; sol-gel processing; strontium compounds; Pb0.3Sr0.7TiO3; Pt coated Si(100) substrates; Pt-Si; columnar texture; dielectric constant; dielectric loss; dielectric properties; sol-concentration; sol-gel method; structural properties; temperature -140 degC to 120 degC; thin films; tunability; Binary search trees; Dielectric constant; Dielectric devices; Dielectric losses; Dielectric substrates; Dielectric thin films; Sputtering; Strontium; Temperature dependence; Thin film devices;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393179
