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Journal of the Korean Ceramic Society 1986;23(4): 69. |
$ZnWO_4$ 단결정 성장 |
임창성, 오권한 |
한양대학교 무기재료공학과 |
$ZnWO_4$ Single Crystal Growth |
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ABSTRACT |
Single crystals of zinc tungstates were grown by the Czochralski method. To obtain the seed crystals various methods were employed including 4 points platinum wirse which dipped the melt and the capillary action from the melt led the 3 differently oriented seeds such as [100], [010] and [001] directions. Optimum growing conditions were observed as neck diameter 2mm rotation speed 50-60 rpm maximum diameter 15mm and pulling rate 0-10 mm/hr. Dendrites covered on the olidified surface in a platinum crucible were turned out to be [001] direction because obviously this crystal has the strong [001] preferential growth habit. The (100) and (010) planes of single crystals showed the slip planes and the (010) plane showed the perfect cleavage surface. |
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