Thermal activation analysis of the dislocation unpinning from stoppers in KCI crystals

Authors

  • G. A. Petchenko A. Beketov Kharkiv National University of Urban Economy, 12 Revolution St., 61002 Kharkiv, Ukraine
  • A. M. Petchenko A. Beketov Kharkiv National University of Urban Economy, 12 Revolution St., 61002 Kharkiv, Ukraine

Keywords:

elastic deformation, activation energy, activation volume, binding energy

Abstract

The effect of temperature and elastic static loading on the dislocations unpinning from stoppers in KCl crystals has been studied. Dependence of the stress of the activation energy on activation volume of the studied process has been determined, value of the energy of the dislocation binding with the pinning center has been calculated. Based on the comparison of the power law of interaction of dislocations and the stopper with the existing theoretical laws, there has been made a conclusion about the possible nature of the dislocation blocking by pinning centers in these crystals. 

Downloads

Published

2016-12-28

Issue

No. 23 (2015): Journal of V.N. Karazin Kharkiv National University, series "Physics"

Section

Articles

How to Cite

Thermal activation analysis of the dislocation unpinning from stoppers in KCI crystals. (2016). Journal of V. N. Karazin Kharkiv National University. Series Physics, 23, 28-31. https://periodicals.karazin.ua/physics/article/view/7769