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Effect of surface tension-driven flow on BaB2O4 crystal growth from high temperature melt-solution

✍ Scribed by Xiuhong Pan; Weiqing Jin; Yan Liu; Fei Ai

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
262 KB
Volume
43
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

The surface tension driven‐flow in BaB~2~O~4~ (BBO) melt‐solution is visualized by differential interference microscope coupled with Schlieren technique, and the streamline of the steady thermocapillary convection is found to be in form of an axially symmetric pattern. Based on the observation of BBO crystal rotation caused by the convective vortex, the widths of interfacial concentration, heat and momentum boundary layer are calculated. The effect of thermocapillary convection on boundary layer thickness is also investigated. Results show that the width of boundary layer decreases linearly with the increasing of dimensionless Marangoni number. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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✍ B.-G. Wang; A. Voigt; Z. -P. Lu 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 198 KB 👁 1 views

In this paper the effect of the growth temperature fluctuation, for instance, the transient furnace temperature variation due to a short-term electric power supply interruption on BBO crystal growth was investigated based on the theory of temperature wave transmitting in melt and the boundary layer