GB1506799A - Method for forming a monocrystal from a ferroelectric material - Google Patents

Method for forming a monocrystal from a ferroelectric material

Info

Publication number
GB1506799A
GB1506799A GB20425/76A GB2042576A GB1506799A GB 1506799 A GB1506799 A GB 1506799A GB 20425/76 A GB20425/76 A GB 20425/76A GB 2042576 A GB2042576 A GB 2042576A GB 1506799 A GB1506799 A GB 1506799A
Authority
GB
United Kingdom
Prior art keywords
monocrystal
melt
ferroelectric material
crystal
pulling
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
GB20425/76A
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB1506799A publication Critical patent/GB1506799A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/20—Controlling or regulating
    • C30B15/22—Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/22—Complex oxides
    • C30B29/30—Niobates; Vanadates; Tantalates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

1506799 Growing a ferroelectric monocrystal COMPAGNIE GENERAL D'ELECTRICITE SA 18 May 1976 [6 June 1975] 20425/76 Heading BIS A monocrystal of ferroelectric material, e.g. lithium niobate with a substantially homogenous magnetic domain structure is formed by providing a melt of the ferroelectric material, pulling a monocrystal from the melt and maintaining a continuous D.C. electric field along the crystal throughout the pulling operation and continuing to maintain the field until the crystal growth is complete and the grown crystal has cooled to below the magnetic transition temperature of the ferroelectric material, the grown crystal being left in contact with the melt at the end of the pulling until both the crystal and solidified melt have cooled below the magnetic transition temperature. Reference has been directed by the comptroller to Specification 1149492
GB20425/76A 1975-06-06 1976-05-18 Method for forming a monocrystal from a ferroelectric material Expired GB1506799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7517758A FR2313778A1 (en) 1975-06-06 1975-06-06 PROCESS FOR ELABORATING A MONOCRISTAL FROM A FERROELECTRIC MATERIAL

Publications (1)

Publication Number Publication Date
GB1506799A true GB1506799A (en) 1978-04-12

Family

ID=9156153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20425/76A Expired GB1506799A (en) 1975-06-06 1976-05-18 Method for forming a monocrystal from a ferroelectric material

Country Status (8)

Country Link
JP (1) JPS51149597A (en)
BE (1) BE841964A (en)
DE (1) DE2624406A1 (en)
FR (1) FR2313778A1 (en)
GB (1) GB1506799A (en)
IT (1) IT1076907B (en)
NL (1) NL7605711A (en)
SE (1) SE7606374L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623423A (en) * 1982-05-04 1986-11-18 Commissariat A L'energie Atomique Process for producing a strain-free monocrystal of a crystalline ferroelectric compound

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100605125B1 (en) * 2005-05-13 2006-07-28 재단법인서울대학교산학협력재단 Rudder of a ship with gap flow stopper between horn and rudder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623423A (en) * 1982-05-04 1986-11-18 Commissariat A L'energie Atomique Process for producing a strain-free monocrystal of a crystalline ferroelectric compound

Also Published As

Publication number Publication date
NL7605711A (en) 1976-12-08
SE7606374L (en) 1976-12-07
JPS51149597A (en) 1976-12-22
FR2313778A1 (en) 1976-12-31
BE841964A (en) 1976-11-19
IT1076907B (en) 1985-04-27
FR2313778B1 (en) 1979-04-27
DE2624406A1 (en) 1976-12-16

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Legal Events

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