Apparatus for growing single crystals of high-melting oxides

An apparatus in which a system of sheet screens surrounding the heating zone has an internal layer of tungsten rods extending towards the exit of the boat from the apparatus to define an annealing chamber. The coils of the heater are arranged so that the number of the heater sections under and above...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ILIN, NIKOLAI PAVLOVICH, BAGDASAROV, KHACHIK SAAKOVICH, STAROSTIN, JURY ALEXANDROVICH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	An apparatus in which a system of sheet screens surrounding the heating zone has an internal layer of tungsten rods extending towards the exit of the boat from the apparatus to define an annealing chamber. The coils of the heater are arranged so that the number of the heater sections under and above the boat is different to ensure uniform heating of the melt, the ends of the heater rods being clamped in the current lead buses and secured by means of locking pins.