Abstract
The generation of a dislocation spiral and fluctuations in the step velocity on the (101) face of monoclinic lysozyme crystals have been studied by in situ atomic force microscopy (AFM). It is shown that the (101) face grows by the dislocation mechanism and that the steps move via the formation of one-dimensional nuclei. The velocity of a part of the step fluctuates, with the fluctuations increasing proportionally to the fourth-order root of time. In the process of spiral generation, a segment of the step attains a certain critical length and then moves with a constant velocity. Even under constant supersaturation, the fluctuations can give rise to changes in the segment length. The interstep distance in the step echelon also varies.
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Translated from Kristallografiya, Vol. 47, No. 5, 2002, pp. 935–932.
Original Russian Text Copyright © 2002 by Rashkovich, Gvozdev, Sil’nikova, Chernov.
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Rashkovich, L.N., Gvozdev, N.V., Sil’nikova, M.I. et al. Fluctuations in the step velocity and the generation of a dislocation spiral on the (101) face of monoclinic lysozyme crystals. Crystallogr. Rep. 47, 859–866 (2002). https://doi.org/10.1134/1.1509406
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DOI: https://doi.org/10.1134/1.1509406