Electrostatic potentials and their spatial derivatives about point defects in ionic crystals

The Volumes of Formation of Schottky Defects in Ionic Crystals *

In this paper we calculate the volumes and energies of formation of Schottky defects in the alkali halides NaCl, NaBr, KC1 and KBr. Both the polarisable point-dipole and a simple shell model are evaluated. The calculation uses a generalised and extended Mott-Littleton approach in conjunction with results derived previously by the lattice statics method of Kanzaki. The polarisable point-dipole m...

Transport Atomique Et Thermodynamique Des Défautslattice Defects in Ionic Crystals

-This review article aims to set the scene for the entire conference. It describes a number of areas where important progress has recently been made, as well as commenting on more established understanding. The review covers (i) defect states, structures and energies, (ii) point defects in or near thermodynamic equilibrium and (iii) the production of defects by irradiation and radiation damage ...

Elastic Constants and Displacement Fields in Crystals with Point Defects

Volume changes and dipole tensors for point defects in crystals

Results for the volume change and dipole tensor for point defects are derived using a generalisation of the Betti reciprocity theorem. These results incorporate the correction terms derived by Flynn, by Lidiard and by Gillan in a simpler way, and allow some more general results to be obtained straightforwardly. Calculations of volume changes caused by defects in solids often use an expression i...

the effect of efl teachers beliefs about teaching reading strategies on their students success and motivation in reading comprehension

previous studies regarding teachers’ beliefs have revealed that teachers’ beliefs have influence on their classroom practices. the current study aimed to investigate the effect of teachers’ beliefs about teaching reading strategies on students’ motivation and success in reading comprehension in the context of english teaching as a foreign language in high schools of mazandaran, iran. data were ...