Method of bistable optical information storage using antiferroelectric phase PLZT ceramics

Patent · Mon Jan 01 00:00:00 EST 1990

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
• 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

Related Subjects

method
bistable
optical
information
storage
antiferroelectric
phase
plzt
ceramics
binary
afe
lead
lanthanum
zirconate
titanate
layer
stable
ferroelectric
obtained
applying
switching
electric
field
surface
device
stored
illuminating
selected
portions
photoactivate
transition
erasure
reapplying
zirconate titanate
electric field
selected portion
information storage
optical information
selected portions
stored information
lanthanum zirconate
lead lanthanum
plzt ceramics
bistable optical
binary optical
bistable storage
/365/359/