Sapphire Properties


Method


   



 
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Method

Kyropoulos method was developed by S.Kyropoulos for growing large single crystals. This method requires a seed crystal which is mounted on a seed holder and sapphire melts in the crucible below. Crystallization happens when the seed crystal is lowered and touches the melts below. The seed crystal then rises slowly as the sapphire crystalline forming below. This rising motion keeps the growing crystal from the wall of the crucible and gives the sapphire boule its circular shape.