GB1516408A - Ferroelectric ceramic materials - Google Patents

Ferroelectric ceramic materials

Info

Publication number
GB1516408A
GB1516408A GB2462375A GB2462375A GB1516408A GB 1516408 A GB1516408 A GB 1516408A GB 2462375 A GB2462375 A GB 2462375A GB 2462375 A GB2462375 A GB 2462375A GB 1516408 A GB1516408 A GB 1516408A
Authority
GB
United Kingdom
Prior art keywords
ferroelectric ceramic
ceramic materials
optical
optical material
birefringence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2462375A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Components Ltd
Original Assignee
Mullard Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mullard Ltd filed Critical Mullard Ltd
Priority to GB2462375A priority Critical patent/GB1516408A/en
Priority to CA253,956A priority patent/CA1090556A/en
Priority to DE19762625535 priority patent/DE2625535A1/en
Priority to FR7617354A priority patent/FR2332964A1/en
Priority to JP51066645A priority patent/JPS527258A/en
Publication of GB1516408A publication Critical patent/GB1516408A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/49—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
    • C04B35/491—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/0009—Materials therefor
    • G02F1/0018—Electro-optical materials
    • G02F1/0027—Ferro-electric materials

Abstract

1516408 Optical material MULLARD Ltd 9 June 1975 24623/75 Heading C1J An optical material having an electrically variable birefringence value and a maximum remanent birefringence between 10 and 60‹C comprises a ferroelectric ceramic of the composition Pb 1 -x La x (Zr y Ti z ) 1 -N/4 O 3 where x is from 0À075 to 0À08 and y/z is greater than 70/30 but less than 74/26. An optical device including a body of the material may be used in a display, filter, imaging system or a memory device.
GB2462375A 1975-06-09 1975-06-09 Ferroelectric ceramic materials Expired GB1516408A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB2462375A GB1516408A (en) 1975-06-09 1975-06-09 Ferroelectric ceramic materials
CA253,956A CA1090556A (en) 1975-06-09 1976-06-03 Ferroelectric ceramic materials
DE19762625535 DE2625535A1 (en) 1975-06-09 1976-06-05 FERROELECTRIC CERAMIC MATERIALS
FR7617354A FR2332964A1 (en) 1975-06-09 1976-06-09 FERRO-ELECTRIC CERAMIC MATERIAL
JP51066645A JPS527258A (en) 1975-06-09 1976-06-09 Optical material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2462375A GB1516408A (en) 1975-06-09 1975-06-09 Ferroelectric ceramic materials

Publications (1)

Publication Number Publication Date
GB1516408A true GB1516408A (en) 1978-07-05

Family

ID=10214618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2462375A Expired GB1516408A (en) 1975-06-09 1975-06-09 Ferroelectric ceramic materials

Country Status (5)

Country Link
JP (1) JPS527258A (en)
CA (1) CA1090556A (en)
DE (1) DE2625535A1 (en)
FR (1) FR2332964A1 (en)
GB (1) GB1516408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072651A (en) * 1980-03-19 1981-10-07 Hitachi Ltd Ceramic crystal
EP0237250A1 (en) * 1986-03-04 1987-09-16 Matsushita Electric Industrial Co., Ltd. Ferroelectric film device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666666A (en) * 1969-12-17 1972-05-30 Atomic Energy Commission Ferroelectric ceramic materials
JPS522083B2 (en) * 1971-10-01 1977-01-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072651A (en) * 1980-03-19 1981-10-07 Hitachi Ltd Ceramic crystal
EP0237250A1 (en) * 1986-03-04 1987-09-16 Matsushita Electric Industrial Co., Ltd. Ferroelectric film device
US5308462A (en) * 1986-03-04 1994-05-03 Matsushita Electric Industrial Co., Ltd. Process for producing a ferroelectric film device

Also Published As

Publication number Publication date
DE2625535A1 (en) 1976-12-23
JPS527258A (en) 1977-01-20
FR2332964A1 (en) 1977-06-24
CA1090556A (en) 1980-12-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee