拉晶速度对HgCdTe—Bridgman系统热场分布影响的研究  

Influence of Crystal Growth Speed on the Temperature Field Distribution of HgCdTe-Bridgman System

作　　者：王培林[1] 刁凤斌 魏科 周士仁 

机构地区：[1]哈尔滨工业大学航天学院

出　　处：《哈尔滨工业大学学报》1994年第6期50-55,共6页Journal of Harbin Institute of Technology

摘　　要：用数值计算方法研究了在Ｂｒｉｄｇｍａｎ系统中生长ＨｇＣｄＴｅ晶体时拉晶速度对热场分布的影响。计算结果表明，大的拉晶速度会造成固液界面向下位移，并使之凹陷现象加剧，不利于获得径向均匀性好的单晶材料。The influence of Crystal Growth speed in a HgCdTe-Bridgman system on the temperature field distribution is studied with numerical method. 'The results of calculation show that the large growth rate of the crystal may results in the sliding down of the solid-liquid interface, and exalerbate the conlave phenomenon as a result, it is difficult to obtain an uniform Crystal in its radial direcfion.

关 键 词：热场分布 有限差分 晶体生长 布里奇曼法 

分 类 号：O782.9[理学—晶体学]