Journal
JOURNAL OF CRYSTAL GROWTH
Volume 295, Issue 2, Pages 158-161Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2006.08.009
Keywords
Bridgman technique; single crystal growth; oxides; acousto-optic materials
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A new method was used to prepare the TeO2 powders with high purity. Acousto-optic paratellurite (TeO2) crystals were grown by the modified Bridgman method using the high purity TeO2 powders. The highly perfect TeO2 single crystal (bubble-free, twin-free, and crack-free) up to 52 x 52 x 80 mm(3) was obtained. The crack reason of the single crystal was discussed. The optimum conditions of growing high quality and large size TeO2 single crystals were obtained, which included a growth rate of less than 0.6 mm/h, a temperature gradient in solid-liquid interface of about 45 K/cm. and a growth direction of < 110 >. (c) 2006 Elsevier B.V. All rights reserved.
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