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The News of Altai State University
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Management, Computer Facilities and Computer Science
Mathematics and Mechanics
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1(61)2009
Physics

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S.N. Bedarev, D.D. Ruder

The Most Dangerous Direction оf Sliding BCC Crystal оf Silver аt Deformation оf Shift (111)<121>

The method of computer modeling investigates the mechanism of destruction BCC lattice of silver at deformation of shift (111)<121> and the direction of unstable displacement of atoms in a crystal is determined at infringement of a dynamic condition of stability. The most dangerous direction of movement of atoms in a crystal, resulting to structural instability is shown, that, not completely coincides with a direction <121> laying in a plane (111), and has a perpendicular component in a direction [111].
Keywords: FCC lattice, mechanism of destruction, direction of unstable displacement, structural instability, phonon spectra, wave vector.

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