Abstract

Correlations between atomic displacements from ideal structural positions in the physical space and the atomic coordinates in the perpendicular space are revealed for approximants of icosahedral quasic� rystals. On average, the displacement magnitude increases with an increase in the distance from the center of projection on the perpendicular space; this indicates that disordering in quasicrystals is concentrated at the periphery of atomic surfaces. It is found that the chemical composition of an alloy significantly affects the specific features of distortion of the ideal structure of quasicrystals and their approximants.

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