FR2333568A1 - Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset - Google Patents

Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset

Info

Publication number
FR2333568A1
FR2333568A1 FR7636464A FR7636464A FR2333568A1 FR 2333568 A1 FR2333568 A1 FR 2333568A1 FR 7636464 A FR7636464 A FR 7636464A FR 7636464 A FR7636464 A FR 7636464A FR 2333568 A1 FR2333568 A1 FR 2333568A1
Authority
FR
France
Prior art keywords
crucible
zone
increasing
resistance
case
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.)
Granted
Application number
FR7636464A
Other languages
English (en)
French (fr)
Other versions
FR2333568B1 (enExample
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.)
Siltronic AG
Original Assignee
Wacker Siltronic AG
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 Wacker Siltronic AG filed Critical Wacker Siltronic AG
Publication of FR2333568A1 publication Critical patent/FR2333568A1/fr
Application granted granted Critical
Publication of FR2333568B1 publication Critical patent/FR2333568B1/fr
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/28Controlling or regulating
    • C30B13/285Crystal holders, e.g. chucks
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16Heating of the molten zone
    • C30B13/20Heating of the molten zone by induction, e.g. hot wire technique

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)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
FR7636464A 1975-12-04 1976-12-03 Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset Granted FR2333568A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752554647 DE2554647B2 (de) 1975-12-04 1975-12-04 Verfahren zur erhoehung der ueberschlagsfestigkeit beim tiegellosen zonenziehen

Publications (2)

Publication Number Publication Date
FR2333568A1 true FR2333568A1 (fr) 1977-07-01
FR2333568B1 FR2333568B1 (enExample) 1978-06-30

Family

ID=5963488

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7636464A Granted FR2333568A1 (fr) 1975-12-04 1976-12-03 Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset

Country Status (7)

Country Link
JP (1) JPS5268803A (enExample)
BE (1) BE848980A (enExample)
DE (1) DE2554647B2 (enExample)
FR (1) FR2333568A1 (enExample)
GB (1) GB1524607A (enExample)
IT (1) IT1074209B (enExample)
NL (1) NL7610913A (enExample)

Also Published As

Publication number Publication date
DE2554647B2 (de) 1978-02-09
FR2333568B1 (enExample) 1978-06-30
GB1524607A (en) 1978-09-13
BE848980A (fr) 1977-06-02
NL7610913A (nl) 1977-06-07
JPS5268803A (en) 1977-06-08
DE2554647A1 (de) 1977-06-08
IT1074209B (it) 1985-04-17

Similar Documents

Publication Publication Date Title
FR2325668A1 (fr) Procede pour la preparation de polyurethannes
FR2333769A1 (fr) Procede pour le dedoublement optique de la 1,4-dimethoxy-6-hydroxy-6-acetyl-tetraline
RO69608A (ro) Procedeu pentru prepararea unor 1,2-benzizotiazol-3-one
BE829868A (fr) Procede de separation d'acides hydroxy-2 naphtalene-carboxyliques
BE838823A (fr) Procede pour la preparation de 1,2,5-dihydroxycholecalciferol
FR2302352A1 (fr) Procede perfectionne de production d'aluminium
BE846883A (fr) Procede pour l'elimination de mercure metallique,
BE841260A (fr) Procede pour la preparation de derives de l'oxazole
BE842584A (fr) Procede pour la preparation de dihalogenures gemines
FR2313380A1 (fr) Procede pour la preparation de methacrylate de glycidyle
PT64718A (fr) Procede pour la preparation de phenyalcoylamines
FR2299323A1 (fr) Procede pour la separation de 4,4'-dichlorodiphenylsulfone
BE848980A (fr) Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset
RO76667A (ro) Procedeu pentru prepararea unor 2,4-dialchilamino-6-clor-5-triazine
FR2318166A1 (fr) Procede de preparation continue de 2,5-dioxo-1-oxa-2-phospholanes
RO70232A (ro) Procedeu pentru prepararea unor 4-pirazoli-4h-1,2,4-triazolil
FR2323769A1 (fr) Procede pour abaisser le degre de contamination de l'aluminium produit par des procedes carbothermiques
PT64691B (fr) Procede pour la preparation d'acides 6,11-di-hydro-11-oxo-dibenz /b,e/ oxepin-alcanoiques
BE861593A (fr) Procede ameliore pour l'extraction continue de la caprolactame par le benzene
FR2317290A1 (fr) Procede pour la preparation de 5-cyanopyridones-(6)
BE817578R (fr) Procede de brasage de l'aluminium et de ses alliages
FR2348174A1 (fr) Procede pour la preparation de dihalogenures gemines
FR2296628A1 (fr) Procede pour la preparation de chloroamino-s-triazines
BE846672A (fr) Procede d'ecalage par tournage de pieces rondes
FR2307793A1 (fr) Procede de preparation de la 1,8-dinitroanthraquinone pure

Legal Events

Date Code Title Description
ST Notification of lapse