Method of bistable optical information storage using antiferroelectric phase PLZT ceramics
Patent
·
OSTI ID:867473
- 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
- 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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method
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antiferroelectric
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plzt
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binary
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lead
lanthanum
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illuminating
selected
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lanthanum zirconate
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bistable
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antiferroelectric
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lead
lanthanum
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stable
ferroelectric
obtained
applying
switching
electric
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surface
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stored
illuminating
selected
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reapplying
zirconate titanate
electric field
selected portion
information storage
optical information
selected portions
stored information
lanthanum zirconate
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plzt ceramics
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binary optical
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