Peierls stress of a screw dislocation in a piezoelectric medium

摘要

In this letter, the Peierls-Nabarro (PN) model is extended to describe dislocation mobility in piezoelectric materials. The Peierls stress of a screw dislocation in a piezoelectric material is calculated based on the generalized PN model and linear piezoelectricity theory. (C) 2004 American Institute of Physics.