Abstract
New types of instabilities associated with crystal anisotropy during thermomigration of rectilinear and curvilinear (annular) zones under the action of a temperature gradient in the silicon-aluminium system are experimentally revealed. A force model of thermomigration is improved, which takes into account vectors of resistance forces to atomic-kinetic processes at the dissolution front. This model explains the observed features of the stable and unstable motion of the linear zones. Reasons and a mechanism of thickenings and kinks of the ends of rectilinear zones, their fragmentation and decay, as well as transformation of annular linear zones into triangular and square zones during thermomigration in the < 111 > and < 100 > directions, respectively, were also explained.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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Funding
The study was supported by the Ministry of Science and Higher Education of the Russian Federation within the State assignments for Platov South-Russian State Polytechnic University (program FENN-2023–005).
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B.M. Seredin — conceptualization, methodology, supervision, investigation, data analysis.
V.P. Popov — methodology, investigation, data acquisition and analysis.
A.M. Malibashev — methodology, investigation, data acquisition and analysis.
I.V. Gavrus — investigation, data acquisition and analysis.
S.M. Loganchuk — investigation, data acquisition and analysis.
S.Y. Martyushov — investigation, data acquisition and analysis.
All authors participated in the preparation and editing of the original draft.
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Seredin, B.M., Popov, V.P., Malibashev, A.V. et al. Effect of silicon anisotropy on the stability of thermomigration of linear zones. Silicon 16, 3453–3460 (2024). https://doi.org/10.1007/s12633-024-02921-0
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DOI: https://doi.org/10.1007/s12633-024-02921-0