Study the dielectric and optic properties of Ti 2 XC (X=In, Sn, Al, Cd and Pb) by density function theory

The dielectric function and optic properties of Ti 2 XC (X=In, Sn, Al, Cd and Pb) were studied by means of pseudo-potential plane-waves method using the density function theory (DFT). Calculations were performed within the generalized gradient approximation (GGA) method to the exchange-correlation approximation energy. The experimental lattice constants and the internal parameters were used in the calculation. The dielectric function and optic properties were calculated by energy band theory.