Deposition of ferroelectric PZT thin films by planar multi-target sputtering

Abstract
A planar multi-target sputtering system was used to deposit ferroelectric lead zirconate titanate (PZT) films. At substrate temperatures of about 450°C “in-situ” deposition of single phase perovskite PZT was obtained. By investigation with SEM and TEM films exhibited a columnar structure with crystallites of about 200 nm in size. The permittivity of the films varied from 450-600. The films exhibited hysteresis loops, remanent polarization of 15-20 μC/cm2 and coercive field strength of 70-85 kV/cm.