硅酸盐学报2017，Vol.45Issue(7)：955-960,6.DOI:10.14062/j.issn.0454-5648.2017.07.10
过饱和度对KDP晶体生长及表面形貌的影响
Influence of Supersaturation on Growth and Surface Morphology of Potassium Dihydrogen Phosphate Crystals
摘要
Abstract
The surface morphology of potassium dihydrogen phosphate (KDP) crystals grown at different supersaturation (σ) values and 35 ℃ was investigated by atomic force microscopy. The prismatic faces growth rate (v) of KDP crystal was measured by laser polarization interference system. The results show that the step speed increases with the rise of supersaturation value, and the values of supersaturation dead zone (σd) and linear zone(σ*) are 0.018 and 0.033, respectively. At a greater supersaturation value (σ=0.07), the increase amplitude of the speed reduces, and the dependencev(σ) becomes a straight line through the origin. In addition, the step width first increases and then decreases with the increase of supersaturation value. The step bunching and slope both are great asσ=0.01, 0.05 and 0.08. The dendritic branch step appears on the crystal surface asσ=0.08. At different supersaturation values, the variation of steps evolution way may cause considerable step bunching and velocity variation.关键词
磷酸二氢钾晶体/溶液晶体生长/过饱和度/台阶推移速率Key words
potassium dihydrogen phosphate crystal/crystal growth from solutions/supersaturation/step evolution speed分类
数理科学引用本文复制引用
李伟东,王圣来,于光伟,丁建旭,王端良,许心光..过饱和度对KDP晶体生长及表面形貌的影响[J].硅酸盐学报,2017,45(7):955-960,6.基金项目
国家自然科学基金项目(51321062) （51321062）
国家自然科学基金青年基金项目(51202131)资助. （51202131）
