THERMALLY DECOMPOSABLE BORON NITRIDE CRUCIBLE

THERMALLY DECOMPOSABLE BORON NITRIDE CRUCIBLE

PROBLEM TO BE SOLVED: To simply and accurately prepare PBN crucible capable of suppressing convection of raw material melt therein and facilitating temperature distribution control therein. SOLUTION: In a thermally decomposable boron nitride crucible for retaining raw material melt, used in producti...

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Bibliographische Detailangaben
Hauptverfasser: KUSHIBASHI TAKUMA, SATO AKIRA, KIMURA NOBORU, KOBAYASHI TOSHIMI
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
CHEMISTRY
COMPOUNDS THEREOF
CRYSTAL GROWTH
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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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Zusammenfassung:PROBLEM TO BE SOLVED: To simply and accurately prepare PBN crucible capable of suppressing convection of raw material melt therein and facilitating temperature distribution control therein. SOLUTION: In a thermally decomposable boron nitride crucible for retaining raw material melt, used in production of a compound semiconductor single crystal by LEC method, distribution is given to roughness of the outer surface of the crucible. In a thermally decomposable boron nitride crucible for retaining raw material melt used in production of a compound semiconductor single crystal by LEC method, materials different in light transmittance in 3700cm and 6500cm are combined.