Abstract
The growth of a faceted pore in a crystal by the Burton–Cabrera–Frank mechanism under action of a mechanical tensile load is considered. The growth is determined by the diffusion of vacancies existing in a crystal to the terraces and steps on the pore surface. The expressions for the speed of movement of a single step and a group of parallel steps, and also for the dependence of the normal growth rate of a pore by the spiral mechanism under action of applied load have been found. It is shown that, in a certain range of low tensile loads, the rate has a quadratic dependence on the load, while the dependence is linear at high loads. The influence of impurities on the crystal fracture by the pore growth mechanism under consideration is discussed.
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Funding
This work was supported by the Council by Grants at the President of the Russian Federation (project no. MK-1574.2019.2) and supported in part by the program of the Presidium of the Russian Academy of Sciences “Nanostructures: physics, chemistry, biology, and fundamentals of technologies” (registration no. NIOKTR AAAA-A19-119012490107-5).
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Translated by Yu. Ryzhkov
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Red’kov, A.V. Growth of Faceted Pores in a Crystal by the Burton–Cabrera–Frank Mechanism. Phys. Solid State 61, 2392–2396 (2019). https://doi.org/10.1134/S1063783419120448
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DOI: https://doi.org/10.1134/S1063783419120448