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Growth and Characterization of Shape-Controlled Single Crystals by a Micro-pulling-down Method

  • Yuui Yokota (a1), Hidehiko Tanaka (a1), Masato Sato (a1) (a2), Valery Chani (a1), Kazushige Tota (a2), Ko Onodera (a2), Takayuki Yanagida (a1) and Akira Yoshikawa (a1) (a3)...

Abstract

Shape-controlled CaF2 and sapphire crystals were grown by a micro-pulling-down (μ-PD) method and the crystallinities were investigated. By the μ-PD method with crucibles which have special configurations, circular tube-shaped CaF2 crystal, square tube-shaped CaF2 crystal and square tube-shaped sapphire crystal with high transparency were obtained. The grown crystals indicated a single phase of CaF2 and Al2O3 in the XRD measurements. X-ray rocking curve of square tube-shaped sapphire indicated the crystal has no mosaic structure in the crystal and it has high crystallinity comparable to crystals grown by Cz method.

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References

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1. Yoon, D., Yonenaga, I., Fukuda, T. and Ohnishi, N., J. Cryst. Growth 142, 339 (1994).
2. Yokota, Y., Chani, V., Sato, M., Tota, K., Onodera, K., Yanagida, T., Yoshikawa, A., J. Cryst. Growth (in press).

Keywords

Growth and Characterization of Shape-Controlled Single Crystals by a Micro-pulling-down Method

  • Yuui Yokota (a1), Hidehiko Tanaka (a1), Masato Sato (a1) (a2), Valery Chani (a1), Kazushige Tota (a2), Ko Onodera (a2), Takayuki Yanagida (a1) and Akira Yoshikawa (a1) (a3)...

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