METHOD FOR PRODUCING LITHIUM TETRABORATE SINGLE CRYSTAL

• Main Authors: WAKABAYASHI HIROKO, YOKOGAWA HIROSHI
• Format: Patent
• Language: English
• Published: 05.02.2004
• Edition: 7
• Subjects: 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

PROBLEM TO BE SOLVED: To solve the problem that latent heat during crystal growth is not efficienly eliminated, air bubbles are caused in a single crystal and the degradation in the quality of the single crystal is resulted when a support is formed of stainless steel, etc., in a method for manufacturing the lithium tetraborate single crystal by a vertical Bridgman method. SOLUTION: The method for producing the lithium tetraborate single crystal by the perpendicular Bridgman method in an oxygen-containing atmosphere comprises using the support formed of ceramics having high thermal conductivity. COPYRIGHT: (C)2004,JPO