In-situ AFM Study on Growth Process of the (100) Face of ZTS Crystal
YIN Huawei, LI Mingwei, CAO Yachao, CHENG Min, SONG Jie
Key Laboratory of Low-Grade Energy Utilization Technologies and System of Ministry of Education, College of Power Engineering, Chongqing University, Chongqing 400030
Abstract: In-situ atomic force microscopy (AFM) method has been applied to real-time observation over the growth process on the (100) face of ZTS crystals under different conditions. It comes out that the (100) face is manifested to be step-faceting, including the elementary steps, macrosteps and quasi-macrosteps. The elementary steps originate from dislocations, defects and two-dimensional nuclei. The macrosteps advance as a whole, but the steps which assembled in the quasi-macrosteps keep the motion characteristics of elementary steps. The advancement of elementary steps shows significant characteristics of anisotropy. The bunching le-vel of step increases obviously with a rise of supersaturation. Besides the mergence of steps among the step cluster, the formation of macrosteps also result from the instability of step motion which is caused by the interaction of steps generating from different sources and moving in different directions. The stability of growth is reflected by the synchronous advance forward of the bunching step series. However, the stability can be destroyed owing to the different supersaturation at diverse locations of the growth steps. In addition, results indicated that the sites of preferential nucleation appear on the crystal surface, and preferential nucleation occurs at the step edges and has the regularity of nucleation-spreading-re-nucleation.
尹华伟, 李明伟, 曹亚超, 程旻, 宋洁. ZTS晶体(100)面生长过程的实时AFM研究*[J]. 《材料导报》期刊社, 2017, 31(12): 15-20.
YIN Huawei, LI Mingwei, CAO Yachao, CHENG Min, SONG Jie. In-situ AFM Study on Growth Process of the (100) Face of ZTS Crystal. Materials Reports, 2017, 31(12): 15-20.
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2017, Vol. 31 
