GB1363804A - Preparing single crystals - Google Patents

Preparing single crystals

Info

Publication number
GB1363804A
GB1363804A GB2295672A GB2295672A GB1363804A GB 1363804 A GB1363804 A GB 1363804A GB 2295672 A GB2295672 A GB 2295672A GB 2295672 A GB2295672 A GB 2295672A GB 1363804 A GB1363804 A GB 1363804A
Authority
GB
United Kingdom
Prior art keywords
solvent
support
axis
oxide
secured
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
GB2295672A
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1363804A publication Critical patent/GB1363804A/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
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/02—Zone-melting with a solvent, e.g. travelling solvent process

Landscapes

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

Abstract

1363804 Zone melting PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 May 1972 [19 May 1971] 22956/72 Heading B1S In the formation of a single crystal by zonemelting, a solvent for the polycrystalline material is present in the molten zone between the material and a seed crystal. As shown, a polycrystalline rod 10 is secured in support 3 and maintained in contact via the molten zone with seed 8 secured in support 2. The support 2 rotates about the axis A A' whilst the support 3 may be displaced in the longitudinal direction of the axis. The assembly including the bracket 1 is mounted on a threaded rod 4 and moves vertically parallel to axis AA'. The heater, which is fixed comprises a strip-shaped flat heating element 5, powered through 7, contains apertures 6, preferably in the form of a circle therein. The solvent is a thin pellet 9 of solid or sintered solvent material which is positioned on the element 5. Alternatively two smaller pellets 9a and 9b may be provided on either side of the element 5. The example describes the preparation of yttrium iron garnet. The seed crystal was cut in the crystallographic direction [110]. The solvent pellet was made from a non-volatile molten mixture of barium oxide, boron oxide, ferric oxide and yttrium oxide.
GB2295672A 1971-05-19 1972-05-16 Preparing single crystals Expired GB1363804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7118263A FR2138232B1 (en) 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
GB1363804A true GB1363804A (en) 1974-08-21

Family

ID=9077337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2295672A Expired GB1363804A (en) 1971-05-19 1972-05-16 Preparing single crystals

Country Status (3)

Country Link
DE (1) DE2221574A1 (en)
FR (1) FR2138232B1 (en)
GB (1) GB1363804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524983A1 (en) * 1985-07-12 1987-01-22 Siemens Ag Process for manufacturing strip-shaped silicon crystals with a horizontal pulling direction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256531A (en) * 1977-08-09 1981-03-17 National Institute For Researches In Inorganic Materials Process for producing single crystal of yttrium-iron garnet or solid solution thereof
FR2587574B1 (en) * 1985-09-18 1987-10-30 Commissariat Energie Atomique RESISTOR FOR PROCESSING MATERIALS
DE102004058547B4 (en) * 2004-12-03 2007-10-25 Schott Ag Method and apparatus for producing single crystals of large diameter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524983A1 (en) * 1985-07-12 1987-01-22 Siemens Ag Process for manufacturing strip-shaped silicon crystals with a horizontal pulling direction

Also Published As

Publication number Publication date
FR2138232A1 (en) 1973-01-05
FR2138232B1 (en) 1973-05-11
DE2221574A1 (en) 1972-12-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees