Abstract
The effect of the thermal conductivity of a crucible in a silicon carbide physical vapor transport furnace on the dislocation distribution in crystal was investigated using numerical analysis. The numerical analysis includes stress and dislocation propagation calculations based on the Alexander–Haasen model. Modifying the thermal conductivity of the carbon crucible can reduce the dislocation density. It can also homogenize the temperature distribution in the radial distribution in the crystal. The density of dislocations could be further by reduced using a carbon crucible with low thermal conductivity.
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