High energy Compton scattering study of TiC and TiN

We present the experimental Compton profiles of TiC and TiN using 661.65 keV gamma-ray from 20 Ci Cs-137 source. To explain our experimental data on momentum densities, we have computed the theoretical profiles, energy bands and density of states using linear combination of atomic orbitals scheme within the framework of density functional theory. In addition the energy bands, density of states and Fermi surfaces using full potential linearised augmented plane wave method have also been computed. Energy bands and density of states obtained from both the theoretical models show metallic character of TiC and TiN. The anisotropies in Compton line shapes and the Fermi surface topology are discussed in term of energy bands. (C) 2011 Elsevier Ltd. All rights reserved.