Sol-gel processing of composite PbTiO3/PLZT thin films

Abstract

A novel sol-gel fabrication approach was developed for the fabrication of composite PbTiO₃/PLZT thin films. The approach involves the deposition of a perovskite (PbTiO₃) interlayer prior to deposition of the PLZT film. Composite PbTiO₃/PLZT sol-gel thin films were prepared on (110) sapphire, platinum-coated sapphire, and platinum-coated silicon substrates. These films were highly crystalline and exhibited preferred crystallographic orientation. This perovskite interlayer approach is applicable to a wide variety ferroelectric thin film and substrate materials.