GB1533509A - Device for pulling a monocrystal from a melt - Google Patents

Device for pulling a monocrystal from a melt

Info

Publication number
GB1533509A
GB1533509A GB24591/77A GB2459177A GB1533509A GB 1533509 A GB1533509 A GB 1533509A GB 24591/77 A GB24591/77 A GB 24591/77A GB 2459177 A GB2459177 A GB 2459177A GB 1533509 A GB1533509 A GB 1533509A
Authority
GB
United Kingdom
Prior art keywords
crystal
melt
pull rod
pulling apparatus
ring
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
GB24591/77A
Other languages
English (en)
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 GB1533509A publication Critical patent/GB1533509A/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
    • C30B15/32—Seed holders, e.g. chucks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
    • G05D3/122—Control of position or direction using feedback using synchromachines (selsyns) without modulation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1418—Control of position or direction using feedback using an analogue comparing device with ac amplifier chain
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1436—Control of position or direction using feedback using an analogue comparing device with fine or coarse devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
GB24591/77A 1976-07-05 1977-06-13 Device for pulling a monocrystal from a melt Expired GB1533509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620442A FR2357302A1 (fr) 1976-07-05 1976-07-05 Dispositif de tirage d'un monocristal a partir d'un bain en fusion

Publications (1)

Publication Number Publication Date
GB1533509A true GB1533509A (en) 1978-11-29

Family

ID=9175230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24591/77A Expired GB1533509A (en) 1976-07-05 1977-06-13 Device for pulling a monocrystal from a melt

Country Status (6)

Country Link
BE (1) BE855611A (de)
DE (1) DE2729176C2 (de)
FR (1) FR2357302A1 (de)
GB (1) GB1533509A (de)
IT (1) IT1080678B (de)
NL (1) NL187170C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5102933A (en) * 1990-05-22 1992-04-07 Witco Corporation Polyvinylchloride composition and stabilizers therefor
DE19758945B3 (de) * 1996-09-03 2012-09-06 Sumitomo Mitsubishi Silicon Corp. Vorrichtung zum Ziehen von Einkristallen
CN105541308B (zh) * 2016-01-23 2018-06-01 胡海波 一种高增透蓝宝石晶棒制造设备及制造工艺

Also Published As

Publication number Publication date
DE2729176C2 (de) 1986-01-16
FR2357302B1 (de) 1978-12-15
NL7706926A (nl) 1978-01-09
IT1080678B (it) 1985-05-16
DE2729176A1 (de) 1978-01-19
NL187170C (nl) 1991-06-17
NL187170B (nl) 1991-01-16
FR2357302A1 (fr) 1978-02-03
BE855611A (fr) 1977-12-13

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Legal Events

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

Effective date: 19920613