Method of inverting ferroelectric domains by application of controlled electric field

摘要

A method for forming inverted ferroelectric domain regions in a substrate including ferroelectric material and having two major opposite surfaces, comprising the steps of: a. depositing a high electrical breakdown layer (14) with a high dielectric constant on a substrate surface typically between 0.5 mu m to 1.0 mu m thick; b. applying conductive electrodes (20) on the dielectric layer and the other substrate surface respectively; and c. providing a voltage across the conductive electrodes having a sufficient magnitude and duration to cause the ferroelectric polarization to invert in a controlled manner. <IMAGE>