摘要
通过利用光学显微镜对ZTS晶体(100)面的台阶推移过程进行实时观察,对不同溶液供应速度及不同过饱和度下的台阶生长动力学进行了研究。结果表明,随着溶液供应速度S的增大,台阶平均推移速率先增大后减小。溶液供应速度S≈1.2mL/min时,台阶平均推移速率达到最大。而在静止的生长溶液中,台阶平均推移速率随着过饱和度σ的增大呈非线性增大,同时确定了生长死区σd和台阶平均推移速率急剧增大时的临界过饱和度值σ*,并计算了不同过饱和度阶段的台阶动力学系数和台阶活化能。
In-situ observation of displacement process of steps on the （100） face of ZTS crystals was observed by using optical microscopy, and the steps growth kinetics were investigated under different supply speed of solu- tion and different supersaturations. The experimental results show that with the supply speed of solution in- creases, the mean displacement velocity of steps increases firstly and then decreases, which reaches a maximum when the supply speed of solution was S~.1.2mL/min; in the static growth solution, the mean displacement velocity of steps increases nonlinearly with the increase of supersaturation, the values of dead zone and the criti- cal supersaturation were determined, meanwhile the kinetic coefficients and activation energy of steps were cal- culated at different supersaturation stages.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第16期2432-2436,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51176208)
中央高校基本科研业务费资助项目(CDJRC10140003)
关键词
ZTS
溶液供应速度
台阶推移速率
生长动力学
实时观测
ZTS
the supply speed of solution
displacement velocity of steps
growth kinetics
in-situ observation
