KDP晶体(100)面生长台阶聚并现象的AFM研究

doi:10.3724/SP.J.1077.2010.01191

无机材料学报 ›› 2010, Vol. 25 ›› Issue (11): 1191-1194.DOI: 10.3724/SP.J.1077.2010.01191 CSTR: 32189.14.SP.J.1077.2010.01191

KDP晶体(100)面生长台阶聚并现象的AFM研究

丁建旭¹, 王圣来¹, 牟晓明², 于光伟¹, 许心光¹, 孙云¹, 刘文洁¹

(1. 山东大学晶体材料国家重点实验室, 济南 250100; 2. 中国兵器工业第52研究所烟台分所, 烟台 264003)

收稿日期:2010-02-08 修回日期:2010-05-10 出版日期:2010-11-20 网络出版日期:2010-11-01
基金资助:
国家自然科学基金(50721002)

AFM Investigation on Step Bunching on (100) Face of KDP Crystal

DING Jian-Xu¹, WANG Sheng-Lai¹, MU Xiao-Ming², YU Guang-Wei¹, XU Xin-Guang¹, SUN Yun¹, LIU Wen-Jie¹

(1. State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China; 2. No. 52 Institute of China North Industries Group, Yantai Department, Yantai 264003, China)

Received:2010-02-08 Revised:2010-05-10 Published:2010-11-20 Online:2010-11-01
Supported by:
National Nature Science Foundation of China (50721002)

摘要/Abstract

摘要： 采用激光偏振干涉手段实时测量了KDP晶体(100)面的生长速度与过饱和度之间的关系, 用AFM技术观察了KDP晶体(100)面在不同过饱和度下的基本台阶和聚并台阶形貌, 并据此分析了由基本台阶到聚并台阶的过程及其与过饱和度之间的关系. 研究表明: 过饱和度为1.8%时, (100)面上以基本台阶为主, 基本台阶的高度为0.366 nm, 约为半晶胞高度; 增大过饱和度, 基本台阶开始聚并, 聚并初期, 台阶高度增加, 进而台阶宽度增加; 随着过饱和度的增大, 台阶聚并加剧, 推移速度加快, 但聚并台阶的斜率基本不变.

关键词: KDP, 台阶聚并, AFM, 晶体生长

Abstract: The dependence of growth rate of (100) face of KDP crystal on supersaturation was measured using the laser polarization interference technique. Morphologies of both elementary steps and macrosteps were investigated by using AFM technique at a serial of supersaturation. Furthermore, the bunching process as well as the influence of supersaturation on bunching process was analyzed according to the AFM results. The results show that at the supersaturation of 1.8%, elementary steps are in priority on (100) face, whose height is 0.366 nm, equivalent to half of the unit cell. When the supersaturation is increased, elementary steps begin bunching together. At the initial bunching stage, the step height and step width are increased. With a rise of supersaturation, more elementary steps participate in the bunching process, and the velocity of the macrosteps increasease as well. At the same time, the slops of the macrosteps reach stable ultimately.

Key words: KDP, step bunching, AFM, crystal growth

中图分类号:

O781

丁建旭, 王圣来, 牟晓明, 于光伟, 许心光, 孙云, 刘文洁. KDP晶体(100)面生长台阶聚并现象的AFM研究[J]. 无机材料学报, 2010, 25(11): 1191-1194.

DING Jian-Xu, WANG Sheng-Lai, MU Xiao-Ming, YU Guang-Wei, XU Xin-Guang, SUN Yun, LIU Wen-Jie. AFM Investigation on Step Bunching on (100) Face of KDP Crystal[J]. Journal of Inorganic Materials, 2010, 25(11): 1191-1194.

参考文献

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KDP晶体(100)面生长台阶聚并现象的AFM研究

AFM Investigation on Step Bunching on (100) Face of KDP Crystal

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