Crystal Growth of LiNbO3 for SAW Devices

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J. Korean Ceram. Soc. > Volume 25(1); 1988 > Article

Journal of the Korean Ceramic Society 1988;25(1): 78.

SAW Device 응용을 위한 LiNbO3 단결정 성장

최종건, 오근호

한양대학교 무기재료공학과

Crystal Growth of LiNbO3 for SAW Devices

ABSTRACT

Good quality LiNbO3 single crystals which can be applied to SAW devices, were grown by Czochralski method. It was observed that the gas-bubbles were concentrated in ring shape at the outer part of grown crystals, and this anomaly was illustrated by modeling the mechanism of gas-bubble entrapment according to the melt flow pattern in the crucible. And this mechanism was also encertained by observation of solid-liquid interface shape of grown crystals. The optimal condition for good quality crystals was known that the solid-liquid interface shape was slightly concave.