DE3223064A1 - Multichamber crucible for growing a plurality of single crystals in one operation - Google Patents

Multichamber crucible for growing a plurality of single crystals in one operation

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Publication number
DE3223064A1
DE3223064A1 DE19823223064 DE3223064A DE3223064A1 DE 3223064 A1 DE3223064 A1 DE 3223064A1 DE 19823223064 DE19823223064 DE 19823223064 DE 3223064 A DE3223064 A DE 3223064A DE 3223064 A1 DE3223064 A1 DE 3223064A1
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DE
Germany
Prior art keywords
crucible
single crystals
crystals
growing
multichamber
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.)
Ceased
Application number
DE19823223064
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German (de)
Inventor
Jürgen 6074 Rödermark Wisotzki
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to DE19823223064 priority Critical patent/DE3223064A1/en
Publication of DE3223064A1 publication Critical patent/DE3223064A1/en
Ceased legal-status Critical Current

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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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/002—Crucibles or containers for supporting the melt
    • 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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger 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
    • C30B29/02—Elements

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  • 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

The crucible for producing single crystals does not have just one, but a plurality of chambers, in each of which a single crystal can be formed during a single operation. If one seed crystal plate is used, single crystals of different orientation can be grown by providing different seed crystals in a single operation.

Description

Mehrkammerntiegel zur Züchtung mehrerer Einkristalle in einemMulti-chamber crucible for growing several single crystals in one

Arbeitsgang Zweck Die Herstellung mehrerer Einkristalle'unterschiedlicher Wachstumsrichtung, des gleichen Materials, in einem Arbeitsgang, aus wirtschaftlichen Gründen.Operation Purpose The production of several single crystals of different types Direction of growth, of the same material, in one operation, for economic reasons Establish.

Bisheriger Stand der Technik Es wurden Einkristallerin Tiegel aus Grafit, Bornitrid, Al 0 Mg O ( in zylindrischer Form, durch Absenken durch einen 2 3 Te 4 eraturgradienten,gefertigt, die bei jeder anderen Wachstumsrichtung,einen erneuten Arbeitsgang bedurften.Previous state of the art Single crystalline crucibles were made Graphite, boron nitride, Al 0 Mg O (in a cylindrical shape, by lowering it through a 2 3 Te 4 erature gradients, produced, which with every other growth direction, one required a new operation.

Selbst bei einer Fertigung von mehreren Kristallen gleichen Materials, konnte man nur die Länge in vertikaler Richtung ausnutzen, um aus der gewonnenen Stablänge mehrere dieser Kristalle herauszuschneiden.Even when producing several crystals of the same material, one could only use the length in the vertical direction to get out of the Cut out several of these crystals rod length.

Erschwerend kam noch hinzu, daß bei einer Pehlzucht,der gesamte Arbeitsvorgang wiederholt werden mußte.To make matters worse was the fact that the entire process of breeding was done had to be repeated.

Kritik des Standes der Technik Bei der Kristallzüchtung nach Bridgeman, durch Absenken des Tiegels durch einen Temperaturgradienten, wurde bisher nur in der Verlängerung der vertikalen Richtung gedacht.Criticism of the state of the art In Bridgeman's crystal growth, by lowering the crucible through a temperature gradient, was previously only available in intended to extend the vertical direction.

Aus eigener Erfahrung besteht immer das Risiko einer Fehlbildung im Kristall und der ganze Züchtungsvorgang muß wiederholt werden.From personal experience, there is always the risk of malformation in the Crystal and the whole growing process must be repeated.

Die Fehlbildung ist üblicherweise erst nach Abschluß des Arbeitsganges feststellbar und der Zeitverlust kann, je nach Material, bis zu maximal 1 - 2 Tage betragen.The malformation is usually only after the work step has been completed noticeable and the loss of time can, depending on the material, be up to a maximum of 1 - 2 days be.

Aufgabe Erstellung eines Tiegels für die Fertigung mehrerer Einkristalle, unterschiedlicher Wachstumsrichtung, des gleichen Materials, in einem Arbeitsgang.Task creation of a crucible for the production of several single crystals, different growth directions, the same material, in one operation.

Lösunq Der von mir entworfene und in der Praxis erprobte Mehrkammerntiegel, erlaubt die Zucht von mehreren Einkristallen,des gleichen Materials, in einem Arbeitsgang.Solution The multi-chamber crucible designed by me and tested in practice, allows the growth of several single crystals of the same material in one operation.

Bei Verwendung von 6 Bohrungen, wurden in einem Arbeitsgang 6 Einkristalle gefertigt, die im willkürlichen Wachstum bereits mehrere unterschiedliche Orientierungen aufwiesen.Using 6 bores, 6 single crystals were produced in one operation manufactured, which in the arbitrary growth already have several different orientations exhibited.

Bei Verwendung der Keimkristallplatte wurden, durch Vorgabe unterschiedlicher Keimkristalle, 6 verschieden orientierte Einkristalle in einem Arbeitsgang gewonnen.When using the seed crystal plate, different settings were made Seed crystals, 6 differently oriented single crystals obtained in one operation.

Bei verschiedenen Versuchen zeigte sich, daß im Falle einer Fehlzüchtung, in einem Arbeitsgang trotzdem noch 4 brauchbare Einkristalle gewonnen wurden, während 2 Kristalle Verzwilligungserscheinungen trugen.Various experiments have shown that in the event of a misbreeding, 4 usable single crystals were still obtained in one operation while 2 crystals showed twinning.

Der Sinn der Erfindung liegt in der wirtschaftlichen Herstellung von mehreren Einkristallen, unterschiedlicher Wachstumsrichtungen, in einem Arbeitsgang.The purpose of the invention lies in the economic production of several single crystals, different growth directions, in one operation.

Zeitvergle iche Gefordert wurden 10 Silber-Einkristalle willkürlicher Orientierung 10 mm , Länge 100 mm.Time comparison The demand was made for 10 silver single crystals more arbitrarily Orientation 10 mm, length 100 mm.

Käufliche Kristallzuchtanlagen haben üblicherweise eine vertikale Weglänge von ca. 300 mm.Commercial crystal growing systems typically have a vertical one Path length of approx. 300 mm.

In diesen Fall wäre die maximale Ausbeute in einem Arbeitsgang 3 Kristalle, mit dem Nachteil des nachträglichen Zuschneidens.In this case the maximum yield in one operation would be 3 crystals, with the disadvantage of subsequent cutting.

Die Absenkgeschwindigkeit für Silber beträgt ca. 30 mm pro Stunde, um eine gesicherte Kristallbildung zu erreichen, das hieße im herkömmlichen Sinn, für 3 Kristalle eine Arbeitszeit von 10 Stunden.The lowering speed for silver is approx. 30 mm per hour, in order to achieve a secure crystal formation, that would mean in the conventional sense, for 3 crystals a working time of 10 hours.

Von mir wurde ein Grafittiegel mit 6 Kammern, 10 mm 120 mm tiefe gefertigt und 6 Einkristalle a' 100 mm Länge gefertigt. Die Arbeitszeit betrug dafür 4 Stunden.I made a graphite crucible with 6 chambers, 10 mm 120 mm deep and 6 single crystals each 100 mm long. The working time for this was 4 hours.

Das Resultat war doppelte Ausbeute bei reduziertem Strom-und Wasserverbrauch, die beide fast proportional in die Zeitdauer des Betriebes einer Kristallzuchtanlage aufgehen.The result was double the yield with reduced electricity and water consumption, both of which are almost proportional to the duration of the operation of a crystal growing system rise up.

Zusammenfassend ergeben sich aus meiner Erfindung folgende Vorteile: 1) Verkürzung der Betriebszeit 2) Einsparung an Strom- und Kühlwasserverbrauch 3j Bei einem 6-Kammerntiegel reduziert sich die Wahrscheinlichkeit der Ausschußfertigung um ein sechsfaches.In summary, the following advantages result from my invention: 1) Reduction of the operating time 2) Saving of electricity and cooling water consumption 3y With a 6-chamber crucible, the probability of rejects is reduced by a factor of six.

4) Die Auswahl, bis zu 6 verschieden orientierte Einkri- 1 stalle, in einem Arbeitsgang, zu gewinnen, durch Vorgabe sechs verschiedener Keirnkristalle. 4) The choice of up to 6 differently oriented single crystals, in one operation, to be won by specifying six different seed crystals.

5) Diese Tiegelkonfiguration ist anwendbar für alle Materialien, aus denen sich Einkristalle,durch Absenken durch einen Temperaturgradienten, fertigen lassen. 5) This crucible configuration can be used for all materials from which single crystals are made by lowering them through a temperature gradient permit.

Die gezeichneten Abmessungen lassen sich in der Anzahl der Bohrungen, der Länge der Keimkristallkammern und deren Durchmesser, beliebig verändern und haben nur durch die Leistung in der Erwärmung für das Aufschmelzen der Materialien, ob direkt, oder indirekt beheizt, ihre obere Grenze.The drawn dimensions can be divided into the number of holes, the length of the seed crystal chambers and their diameter, change as desired and have only due to the performance in the heating for the melting of the materials, whether directly or indirectly heated, its upper limit.

Anlage: Zeichnung der Tiegelkonfiguration Foto von Tiegeln und Einkristallen LeerseiteAppendix: Drawing of the crucible configuration Photo of crucibles and single crystals Blank page

Claims (4)

Patentansprüche 1. Tiegel zur Herstellung von Einkristallen nach BRIDGEMAN durch Absenken des Tiegels durch einen Temperaturgradienten, d a -d u r c h g e k e n n z e i c h n e t , daß er mehrere Kammern aufweist. Claims 1. Crucible for the production of single crystals according to BRIDGEMAN by lowering the crucible through a temperature gradient, d a -d u it is noted that it has several chambers. 2. Tiegel nach Anspruch 1, da d u r c h g e k e n n -z e i c h n e t , daß er sechs Kammern hat.2. Crucible according to claim 1, since d u r c h g e k e n n -z e i c h n e t that it has six chambers. 3. Tiegel nach Anspruch 1 oder 2, d a d u r c h g e k e n nz e i c h n e t , daß er eine Keimkristallplatte aufweist.3. Crucible according to claim 1 or 2, d a d u r c h g e k e n nz e i c Note that it has a seed crystal plate. 4. Verfahren zur Herstellung von Einkristallen unterschiedlicher Orientierung mittels eines Tiegels nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , daß in einem Arbeitsgang in den verschiedenen Kammern unterschiedliche Keimkristalle vorgegeben werden.4. Process for the production of single crystals with different orientations by means of a crucible according to one of claims 1 to 3, d u r c h g e k e n It is not indicated that in one operation in the various chambers different Seed crystals are given.
DE19823223064 1982-06-21 1982-06-21 Multichamber crucible for growing a plurality of single crystals in one operation Ceased DE3223064A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823223064 DE3223064A1 (en) 1982-06-21 1982-06-21 Multichamber crucible for growing a plurality of single crystals in one operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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DE3223064A1 true DE3223064A1 (en) 1983-12-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629193A1 (en) * 1983-07-02 1989-09-29 Wisotzki Juergen FUNNEL OR SHELL INSERT FOR HOLLOW LOADS, METHOD AND MOLD FOR MANUFACTURE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049384A (en) * 1975-04-14 1977-09-20 Arthur D. Little, Inc. Cold crucible system
DE3031747A1 (en) * 1980-08-22 1982-03-11 Šarygin, Nikolaj Vasil'evič Mono:crystal growing appts., using zone melting and casting - where several mono:crystal alloy rods, esp. magnets, can be cast simultaneously

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049384A (en) * 1975-04-14 1977-09-20 Arthur D. Little, Inc. Cold crucible system
DE3031747A1 (en) * 1980-08-22 1982-03-11 Šarygin, Nikolaj Vasil'evič Mono:crystal growing appts., using zone melting and casting - where several mono:crystal alloy rods, esp. magnets, can be cast simultaneously

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629193A1 (en) * 1983-07-02 1989-09-29 Wisotzki Juergen FUNNEL OR SHELL INSERT FOR HOLLOW LOADS, METHOD AND MOLD FOR MANUFACTURE

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