论文标题
线圈几何形状在Czochralski Bismuth德语（BGO）晶体生长过程中的作用：热应力分析
Role of coil-crucible geometry in Czochralski bismuth germanate (BGO) crystal growth process: a thermal stress analysis
论文作者
论文摘要
在氧化物Czochralski晶体生长系统中，开发了稳态水平2D有限元的数值模型。使用扩展模型来比较感应线圈和坩埚在生长过程中的不同几何形状的影响。对结果的分析强调了修饰的几何形状在电磁场和热分布改变时的潜力。因此，可以实现晶体/熔体界面形状，热应力积累以及在生长晶体中的分布的优化。最后，比较了提出的热应力计算方法。结果在BGO晶体中应力分布的计算中显示了两种热弹性应力分析方法之间的定性一致性。
A numerical model of 2D finite element in a steady-state level was developed for the electromagnetic field, heat distribution, and thermal stress expansion in an oxide Czochralski crystal growth system. The extended model was employed to compare the impact of different geometries of induction coils and crucibles in the growth process. Analysis of the results emphasizes the potential of the modified geometries in alteration of the electromagnetic field and heat distribution. Consequently, the optimization of crystal/melt interface shape, thermal stress accumulation, and distribution in the growing crystal can be achieved. Finally, the proposed approaches for thermal stress calculations were compared. The outcomes showed a qualitative agreement between two methods of thermoelastic stress analysis in the calculation of stress distribution in BGO crystal.
