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On the change in the modulus of elasticity with a decrease in the size of a nanocrystal

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Abstract

A model of nanocrystal in the form of a rectangular parallelepiped with a variable surface shape is used to show that, at high temperatures, modulus of elasticity B decreases with a decrease in size of the nanocrystal N, which is due to the increase in the surface pressure. However, at low temperatures, dependence B(N) is less pronounced and can even rise with a decrease in the nanocrystal size. This is because, at low temperatures, the increase in the surface pressure (which is larger than at high temperatures) leads to an increase in the modulus of elasticity for the entire nanocrystal. The more the nanocrystal shape deviates from the most energetically stable shape, the more pronounced the change in the dependence B(N) is.

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Authors and Affiliations

  1. Institute for Geothermal Research, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Dagestan, 367030, Russia

    M. N. Magomedov

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  1. M. N. Magomedov
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Correspondence to M. N. Magomedov.

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Original Russian Text © M.N. Magomedov, 2013, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 39, No. 9, pp. 9–17.

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Magomedov, M.N. On the change in the modulus of elasticity with a decrease in the size of a nanocrystal. Tech. Phys. Lett. 39, 409–412 (2013). https://doi.org/10.1134/S1063785013050076

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  • DOI: https://doi.org/10.1134/S1063785013050076

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