8 April 1999 Growth mechanism of KAP crystals: surface morphology of the (010) face
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Abstract
The surface morphology of the (010) face of KAP crystals growth from aqueous solution at low supersaturations (0.03 divided by 0.04) was investigated by the optical and electron microscopy using the gold decoration technique. The variety of growth patterns has been revealed: macroscopic hillocks, shallow hillocks, microscopic hillocks and numerous 2D nuclei. The macroscopic hillocks and smaller polygonal hillocks are formed by a group of cooperating dislocations or by a single dislocation. The density of observed shallow hillocks is higher than the dislocation density. The results reveal that, at low supersaturations, growth of the (010) face occurs by combined spiral and 2D nucleation mechanisms. The influence of low concentrations of organic additives on surface morphology of the (010) face has also been studied. The additives stimulate 2D nucleation and they increase the spread velocity of steps. The growth promoting effect of impurities is discussed in terms of the above data.
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V. A. Kuznetsov, V. A. Kuznetsov, N. D. Samotoin, N. D. Samotoin, T. M. Okhrimenko, T. M. Okhrimenko, Miroslawa Rak, Miroslawa Rak, } "Growth mechanism of KAP crystals: surface morphology of the (010) face", Proc. SPIE 3725, International Conference on Solid State Crystals '98: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (8 April 1999); doi: 10.1117/12.344760; https://doi.org/10.1117/12.344760
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