Table of Contents
Indian Journal of Materials Science
Volume 2015, Article ID 296095, 11 pages
http://dx.doi.org/10.1155/2015/296095
Research Article

Electronic Structure, Electronic Charge Density, and Optical Properties Analysis of GdX3 (X = In, Sn, Tl, and Pb) Compounds: DFT Calculations

1Department of Physics, National Defence Academy, Pune 411023, India
2Department of Physics, Sarojini Naidu Government Girls P. G. Autonomous College, Bhopal 462016, India
3Department of Physics, Barkatullah University, Bhopal 462026, India

Received 5 May 2015; Revised 10 July 2015; Accepted 12 July 2015

Academic Editor: Andres Sotelo

Copyright © 2015 Jisha Annie Abraham et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The electronic properties of magnetic cubic AuCu3 type GdX3 (X = In, Sn, Tl, and Pb) have been studied using first principles calculations based on density functional theory. Because of the presence of strong on-site Coulomb repulsion between the highly localized 4f electrons of Gd atoms, we have used LSDA + U approach to get accurate results in the present study. The electronic band structures as well as density of states reveal that the studied compounds show metallic behavior under ambient conditions. The calculated density of states at the Fermi level N() shows good agreement with the available experimental results. The calculated electronic charge density plots show the presence of ionic bonding in all the compounds along with partial covalent bonding except in GdIn3. The complex optical dielectric function’s dispersion and the related optical properties such as refractive indices, reflectivity, and energy-loss function were calculated and discussed in detail.