Journal of Crystal Growth, Vol.218, No.1, 74-80, 2000
On void engulfment in shaped sapphire crystals using 3D modelling
The characteristics of the melt flow in the meniscus in edge-defined film-fed growth have been studied using a 3-D model. The influence of the growth conditions (pulling rates and ambient temperature distribution) on the void distribution in rod sapphire crystals has been studied modeling the melt flow in the meniscus. The flow behavior obtained can explain the observed void distribution.