先进材料疑固实验室 Crystal growth methods Laboratory of Advanced Materials Solidification Czochralski methods(CZ mothods) Molten liquid hold in a hot pot(crucible),a Seeds pole with a seed fixed at the end and insert Crystal into the liquid.Due to the undercooling at the Coil surface,liquid nucleated and growth on the seeds.When pulling the seed pole,the crystal will growth gently with lifted pole and forming a single crystal bar. Crucible can be heated up using high frequency induction coil or electronic Control parameters: resistant heating elements. >Temperature gradient, For semi-conductor as Ge(germanium),Si, >Growth rate, or oxide single crystal like yttrium aluminium >Crystal rotation speed, garnet (YAG),Gadolinium gallium garnet >Hydrodynamic effect. (GGG),Aluminium niobate as so on. 上游文通大学 SHANGHAI JIAO TONG UNIVERSITYCrystal growth methods Czochralski methods (CZ mothods) Seeds Crystal Liquid Coil Molten liquid hold in a hot pot (crucible), a pole with a seed fixed at the end and insert into the liquid. Due to the undercooling at the surface, liquid nucleated and growth on the seeds. When pulling the seed pole, the crystal will growth gently with lifted pole and forming a single crystal bar. Crucible can be heated up using high frequency induction coil or electronic resistant heating elements. For semi-conductor as Ge (germanium), Si, or oxide single crystal like yttrium aluminium garnet (YAG), Gadolinium gallium garnet (GGG), Aluminium niobate as so on. Control parameters: Temperature gradient, Growth rate, Crystal rotation speed, Hydrodynamic effect