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J. Korean Ceram. Soc. > Volume 27(6); 1990 > Article
Journal of the Korean Ceramic Society 1990;27(6): 783.
EFG법에 의한 Sapphire Ribbon 단결정 성장
박신서, 류두형, 정재우, 최종건, 오근호, 손선기1, 변영재1, 전형탁1
한양대학교 무기재료공학과
1남성세라믹 기술연구소
Sapphire Ribbon Single Crystal Growth by EFG Method
Shaped crystal growth apparatus were made for sapphire ribbon single crystal growth. Sapphire ribbon single crystal are grown by EFG(Edge-defined Film-fed Growth) methdo for use as watch-glass and SOS(Silicon-On-Sapphire) devices. Sapphire ribbon crystals were grown to be 40min wide, 1.8mm thick, 96mm long. Therelationshiops between growth striation and surface roughness, with various growth rates, were investigated and compared. It was found that sapphire ribbon crystal is suitable for watch-glass by measuring the transmittance in the visible light region.
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