Method of bistable optical information storage using antiferroelectric phase PLZT ceramics

Patent · Sun Dec 31 23:00:00 EST 1989

OSTI ID:867473

Land, Cecil E ^[1]

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1. 2118 Gretta NE., Albuquerque, NM 87112

A method for bistable storage of binary optical information includes an antiferroelectric (AFE) lead lanthanum zirconate titanate (PLZT) layer having a stable antiferroelectric first phase and a ferroelectric (FE) second phase obtained by applying a switching electric field across the surface of the device. Optical information is stored by illuminating selected portions of the layer to photoactivate an FE to AFE transition in those portions. Erasure of the stored information is obtained by reapplying the switching field.

• Research Organization: AT & T CORP
• DOE Contract Number: AC04-76DP00789
• Assignee: Land, Cecil E. (2118 Gretta NE., Albuquerque, NM 87112)
• Patent Number(s): US 4945514
• OSTI ID: 867473
• Country of Publication: United States
• Language: English

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