FIELD: optics. SUBSTANCE: optical memory cell has ferroelectric substrate, onto one side of which the metal electrode is disposed. Two metal electrodes are located at the other side of the substrate. There is a photosemiconductor layer between the two electrodes. The electrodes and photosemiconductor layer form film photoresistor which has substrate made of single-crystal barium- strontium niobate. EFFECT: improved efficiency of operation.
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