Fluctuation of crystallization at center part of floating molten zone under reduced gravity condition by H. Kimura, A. Miyazaki, K. Maiwa, and H. Nakamura

Crystal Research and Technology

Cryst. Res. Technol. 39, 117 (2004) - Abstract -

Fluctuation of crystallization at center part of floating molten zone under reduced gravity condition

H. Kimura, A. Miyazaki, K. Maiwa, and H. Nakamura

National Institute for Materials Science, 1-2-1 Sengen Tsukuba, Ibaraki 305-0047, Japan

Keywords	oxide, crystallization, floating molten zone, reduced gravity, gravity fluctuation
PACS	81.10.Fq
DOI	10.1002/crat.200310158

Fluctuation of crystallization was observed at floating molten zone under reduced gravity condition on airplane. The zone material was Ba(B_0.9Al_0.1)₂O₄. A pair of Pt tubes was used at the upper and the lower positions, and the molten zone was formed between two Pt tubes. Double peak temperature profile could be performed using two Pt tubes. Crystallization of the molten Ba(B_0.9Al_0.1)₂O₄ was started at center part of side surface of floating molten zone under reduced gravity condition. The formed crystal was melted again during the crystallization by the gravity fluctuation at the center part of the floating molten zone.

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