Computer simulation;
Magnetic fields;
Magnetic field-assisted Czochralski method;
Semiconducting silicon;
D O I:
10.1016/j.jcrysgro.2004.11.292
中图分类号:
O7 [晶体学];
学科分类号:
0702 ;
070205 ;
0703 ;
080501 ;
摘要:
In order to clarify the effects of configuration of magnetic field on the melt-crystal interface shape and the melt convection in a crucible, a set of numerical computations was conducted for a Czochralski furnace for silicon crystals of small diameter by global modeling. Under different combinations of crucible/crystal rotation rates, numerical comparisons were carried out for four configurations of magnetic field: a transverse magnetic field, a vertical magnetic field and two types of cusp-shaped magnetic fields. The computations revealed that each magnetic-field configuration has its own feature in affecting the melt convection and the melt-crystal interface shape when combining with variation in crystal/crucible rotation rates. (C) 2004 Elsevier B. V. All rights reserved.