Abstract: | The rotational model for ZnO plasticity under the action of concentraion stresses is given on the ground of the real structure analysis (the presence of two scales of the crystal lattice disorientation, a change of the ZnO crystal lattice parameter and the presence of disorientation boundaries of different types). Concentration stresses estimated at the Tgr. documentclass{article}pagestyle{empty}begin{document}$ tau = Gvarepsilon = Gfrac{{Delta a}}{a} approx 20 $end{document} MPa exceed the yield point of crystals at Tgr. and may be the cause of rotational plasticity development. |