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

Published online by Cambridge University Press:  26 January 2011

Yuui Yokota ,
Hidehiko Tanaka ,
Masato Sato ,
Valery Chani ,
Kazushige Tota ,
Ko Onodera ,
Takayuki Yanagida  and
Akira Yoshikawa
Yuui Yokota
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN
Hidehiko Tanaka
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN
Masato Sato
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN TDK Corporation, 1-1 Okinota Kisakata Nikaho Akita, 018-0193, JAPAN
Valery Chani
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN
Kazushige Tota
Affiliation:
TDK Corporation, 1-1 Okinota Kisakata Nikaho Akita, 018-0193, JAPAN
Ko Onodera
Affiliation:
TDK Corporation, 1-1 Okinota Kisakata Nikaho Akita, 018-0193, JAPAN
Takayuki Yanagida
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN
Akira Yoshikawa
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira Aoba-ku Sendai Miyagi, 980-8577, JAPAN New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aoba Aramaki Aoba-ku Sendai Miyagi, 980-8579, JAPAN
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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.

Keywords

crystalcrystal growthcrystalline
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1309: Symposium EE – Solid-State Chemistry of Inorganic Materials VIII , 2011 , mrsf10-1309-ee06-29
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

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