Abstract
An exactly solvable model of nucleation during the growth of nanowhiskers has been constructed. Activation barriers for the formation of nuclei in various positions are determined as dependent on the chemical potentials and surface energies. It is shown that the nucleation at the triple contact line is energetically favorable. In a broad range of system parameters, the formation of a hexagonal vurtzite-like crystalline phase takes place (particularly for GaAs nanowhiskers growing on an GaAs(111)B substrate surface activated by gold drops). Dependences of the probability of the hexagonal phase formation on the degree of supersaturation in the liquid catalyst and the NW radius are determined.
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Original Russian Text © V.G. Dubrovskii, N.V. Sibirev, 2009, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 35, No. 8, pp. 73–80.
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Dubrovskii, V.G., Sibirev, N.V. Effect of nucleation on the crystalline structure of nanowhiskers. Tech. Phys. Lett. 35, 380–383 (2009). https://doi.org/10.1134/S1063785009040282
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DOI: https://doi.org/10.1134/S1063785009040282