Shuffle-glide dislocation transformation in Si

Z Li and RC Picu, JOURNAL OF APPLIED PHYSICS, 113, 083519 (2013).

DOI: 10.1063/1.4793635

The transformation of dislocation cores from the shuffle to the glide set of 111 glide planes in Si is examined in this work. The transformation is thermally activated and is favored by a resolved shear stress which applies no force on the original perfect shuffle dislocation. A resolved shear stress driving dislocation motion in the glide plane is not observed to promote the transition. The stress- dependent activation energy for the described shuffle-glide transformation mechanism is evaluated using a statistical analysis. It is observed that the transformation is not associated with an intermediate metastable state, as has been previously suggested in the literature. (C) 2013 American Institute of Physics.

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