Czrochralski method

Czrochralski A process for growing large single crystals. The bulk of the material is melted in a crucible. A single crystal of the same material is lowered onto the surface of the melt and then slowly pulled upward, producing a cylindrical single crystal known as a boule. Invented by J. Czochralski as a method for determining the velocity of crystallization of molten metals. 

Although this method was used initially to grow very refractive crystals of high melting point (because Czrochralski equipment was not adequate to attain the high temperatures needed), recent improvements in... 

Czrochralski growth equipment have made the Vemeuil method nearly obsolete. 

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