Abstract

The growth of zinc platelets on zinc single crystals in the presence of hydrogen or argon is investigated. It is shown that by the growth of platelets on the pyramidal 1 0 1 ̄ 1 and prismatic 1 0 1 ̄ 0 faces, zinc single crystals lost their morphological stability. It is established that the smooth {0 0 0 1} faces of the platelets change their shape in skeletal, while new platelets start growing from the peaks of the primary ones. The results are discussed and are in conformance with Chernov's theory for the disturbance of the morphological stability of crystal forms. The alteration of the surface structure of zinc single crystals and the platelets growing on them demonstrate the crucial role played by bulk diffusion during crystal growth.

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