Large single crystal production by the floating zone method uses insulating components or layers to suppress electrical charges between the heating coil and the polycrystalline and grown blocks and the melt zone

摘要

Apparatus for production of single crystals by the floating zone (FZ) method has a chamber containing a crude polycrystalline cast block, a grown single crystal block and an induction heating coil producing the melt zone between the blocks, suppression of electrical charges between the coil and the blocks and melt zone involving placing an insulating component between the coil and the blocks and melt zone and/or placing a layer of insulant onto the coil surface. An independent claim is also included for effecting the growth of the single crystal block using the above insulating component and/or insulant layer.