Polarization domain visualization observation method of ferroelectrics and its equipment

摘要

PROBLEM TO BE SOLVED: To provide a visualization/observation method and device of a polarization domain of a ferroelectric substance allowing observation at a high speed and high resolution by a simple observation method.SOLUTION: Positive and negative electric fields having a magnitude that does not invert a polarization domain are generated alternately at a cycle T in a ferroelectric substance thin film. The transmitted light or reflected light of monochromatic light that is radiated to the ferroelectric substance thin film synchronously with the cycle is imaged by a two-dimensional optical detector. A difference image between one set of images imaged in a positive electric field and negative electric field is obtained. An integrated image generated from a plurality of difference images is obtained to provide a contrast, and the cycle T is shifted to a short time side and a noise removal of the difference images is performed.SELECTED DRAWING: Figure 8