Abstract

During the growth of many oxide crystals, it has become well known that abrupt changes in heat flow can often occur which result in sudden diameter changes during uncontrolled growth or in sudden interface shape changes during constant diameter growth. It has been postulated that the observed effect is due to the interaction of forced convection flows from crystal rotation with thermal convection flows in the melt. However, there has been no proper analysis of this effect to date. The present note develops the relationship between forced convection and thermal convection flows which quantitatively explains the growth transition behavior reported for garnet crystals.

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