Method of bistable optical information storage using antiferroelectric phase PLZT ceramics

Land, Cecil E

Title: Method of bistable optical information storage using antiferroelectric phase PLZT ceramics

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Abstract

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.

Inventors:

Land, Cecil E ^[1]

2118 Gretta NE., Albuquerque, NM 87112

Issue Date:: 1990-01-01

Research Org.:: AT&T

OSTI Identifier:: 867473

Patent Number(s):: 4945514

Assignee:: Land, Cecil E. (2118 Gretta NE., Albuquerque, NM 87112)

Patent Classifications (CPCs):: G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES

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G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES
G11C11/22 - using ferroelectric elements {
G11C7/005 - {with combined beam-and individual cell access}

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DOE Contract Number:: AC04-76DP00789

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 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/

Citation Formats


                    Land, Cecil E. Method of bistable optical information storage using antiferroelectric phase PLZT ceramics.  United States: N. p., 1990. 
        Web.

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                    Land, Cecil E. Method of bistable optical information storage using antiferroelectric phase PLZT ceramics.  United States.

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                    Land, Cecil E. Mon .  
        "Method of bistable optical information storage using antiferroelectric phase PLZT ceramics".  United States.  https://www.osti.gov/servlets/purl/867473.

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@article{osti_867473,

  title        = {Method of bistable optical information storage using antiferroelectric phase PLZT ceramics},

  author       = {Land, Cecil E},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {1}

}

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