【作者】 张健；

【导师】 刘景和；

【作者基本信息】 长春理工大学 ， 凝聚态物理， 2002， 硕士

【摘要】 本文对丘克拉斯基（Czochralski CZ）法生长YVO₄晶体的工艺特点进行了评述，根据有限差分的方法，用VC++语言编写了场量计算程序，对YVO₄双折射光学晶体生长过程中的温度场和速度场进行了数值模拟。数值模拟的结果表明，在CZ法生长YVO₄单晶过程中，由于熔体中存在着因温度梯度引起的自然对流和晶体旋转引起的强迫对流，使生长大尺寸单晶有着一定的困难。本文通过数值模拟的方法模拟出了当晶体转速变化时的温度场和速度场的变化过程曲线，对生长大尺寸YVO₄单晶有重要的参考意义。更多还原

【Abstract】 We article reviewed craftwork characteristic of growth YVO4 crystal by means of Czochralski-CZ. According to method of fimty-difference, we compiled Field Quantity Estimate Program (FQEP) with VC++ that we can numerical simulate temperate-field and velocity-field while YVO4 dual- refractive optics crystal is growing. Here is the result, during YVO4 odd-crystal growing under CZ method, while fusibility contain nature-convection by temp-grads and impose-convection by crystal-circumvolve, which make it difficult to growth large dimension odd-crystal. By numerical simulation method, we simulated changing-curve of temp-grads and velocity-grads while crystal rotate speed was changing, which have very important reference- signification to large-dimension growth of YVO4 odd-crystal.更多还原