A quantum-chemical study of oxygen-vacancy defects in PbTiO3 crystals

Abstract:

Investigation of an oxygen vacancy and F center in the cubic and tetragonal lattices of PbTiO<inf>3</inf> crystals is done by means of quantum-chemical simulations. Displacements of defect-surrounding atoms, electronic and optical properties, lattice relaxation energies and some new effects due to the defects presence are reported and analyzed. A comparison with similar studies is made and conclusions are drawn on the basis of the obtained results. © 2006 Elsevier B.V. All rights reserved.

Año de publicación:

2006

Keywords:

• electronic structure
• F centers
• PBTIO3
• Point defects

Fuente:

scopus