The control which uses the variable magnetic field of melt - solid boundary form of the silicon crystal which grows

摘要

It is method and the system in order to control the grain growth inside the Czochralski method grain growth device. Applying the magnetic field inside the grain growth device, it changes the form of the melt - solid boundary where it can pull up from the melt the ingot and controls. Form of the melt - solid boundary corresponding to the magnetic field which it changes as a function of length of the ingot, makes form of desire.