This paper constructed a geometric model of crystal growth with pulling. On the basis of the model, effects of processes on crystal shape evolution were clarified. The results shown some effects always used to control the crystal diameter in practice. Some unusual effects also be shown. Crystal could have a self-stable diameter and decreasing the convex extent of solid liquid interface could enhance the increase rate of crystal diameter or reduce the decrease rate of crystal diameter.
Comments: 9 pages and 5 figures, will be submited to the journal Crystal Research and Technology.
[v1] 2 Apr 2011
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