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This article is cited in 7 scientific papers (total in 7 papers)
Physics of nanostructures
Melting behaviour of fractal-shaped nanoparticles (the example of Si–Ge system)
A. V. Shishulina, V. B. Fedoseeva, A. V. Shishulinab a G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhnii Novgorod
b Dzerzhinsk Polytechnic Institute, Branch of R.E. Alekseev Nizhny Novgorod State Technical University
Abstract:
In this paper, thermodynamical approach has been used to simulate the influence of shape on phase equilibria in the two-phase-region between liquidus and solidus temperatures in case of Si–Ge alloy nanoparticles. Volumes and shapes of considered nanoparticles have been described by their effective radii and fractal dimensions, the dependence of fractal dimensions on temperature has been obtained using a simple geometrical model. It has been shown that decreasing the volume of a nanoparticle and its fractal dimension (which corresponds to nanoparticles of a more complicated shape) leads to narrowing down the temperature range of the heterogeneous region and changes the phase transition temperatures and equilibrium compositions of co-existing phases. At different temperatures, the dependences of the composition of the liquid phase differ which is explained by implementing different mechanisms of reducing the surface energy.
Keywords:
nanostructuring, silicon, germanium, liquidus, solidus.
Received: 09.03.2019 Revised: 09.03.2019 Accepted: 18.03.2019
Citation:
A. V. Shishulin, V. B. Fedoseev, A. V. Shishulina, “Melting behaviour of fractal-shaped nanoparticles (the example of Si–Ge system)”, Zhurnal Tekhnicheskoi Fiziki, 89:9 (2019), 1420–1426; Tech. Phys., 64:9 (2019), 1343–1349
Linking options:
https://www.mathnet.ru/eng/jtf5521 https://www.mathnet.ru/eng/jtf/v89/i9/p1420
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