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 char...Show MoreMetadata
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 lead strontium titanate (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 0.30 M. PST thin films derived from 0.35 M sol show better dielectric characteristics with the dielectric constant, dielectric loss, tunability, and field of motion (FOM) (tun- ability/dissipation) of 200, 0.01, 47% and 47, respectively. The temperature dependence of the dielectric constant, dielectric loss and tunability of PST thin films were investigated in the temperature range of -140 to 120degC exhibiting a dielectric peak of about -45degC.
Published in: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control ( Volume: 55, Issue: 5, May 2008)