Photoferroelectric effects in PLZT ceramics
- 1 January 1978
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 22 (1) , 677-679
- https://doi.org/10.1080/00150197808237366
Abstract
A photoferroelectric effect described as photoassisted domain switching (PDS) is used to store high resolution, high contrast, non-volatile optical information, including gray-scale images in PLZT ceramics. Image storage is achieved by switching the ferroelectric remanent polarization while exposing the image on one of the indium tin oxide electroded surfaces of a PLZT plate, using near-UV light at the PLZT band gap energy (3.35 eV). PDS eliminates the photo-conductive films required in previous PLZT image storage devices. Some characteristics of the PDS effect which apply to image storage and selective erasure are described.Keywords
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