In this paper, the optical properties of CaH₂, in orthorhombic structure, with space group, , in crystal system (Co₂Si-type) have been investigated carefully. The theoretical milieu of the correlation between the dielectric function with other optical constants has been investigated. The real and the imaginary parts of the dielectric function have besides, been inspected accurately. The outcome of the exchange correlation potentials implemented (GGA and GGA U) to the abso...

Solid Mechanics  Applied Physics  Function Theory 

The Unsymmetrized Self-Consistent Field Method (USCFM) has applied to a linear infinite chain consisting of two different particles. Expanding the self-consistent potential in power series of the lattice displacement, and taking the anharmonicity up to the fifth order, we show that all thermodynamic properties can be found in terms of two universal functions M₁^(α)M₁^(β)...

Solid Mechanics