Interactions due to Hall current and photothermal effect in a magneto-thermoelastic medium with diffusion and gravity

Aim of the present study is to investigate the effects of mass diffusion, gravity and magnetic field with Hall current on a photothermoelastic semiconducting medium in the context of Lord-Shulman (L-S) theory. The normal mode analysis method is used to obtain the expressions of physical quantities such as stress, temperature, displacement, concentration and carrier density. A moving mechanical load is applied at the outer free surface of the medium and a complete solution of the physical field distributions is obtained. The numerical results of physical quantities for a particular material are obtained using MATLAB software and illustrated graphically. The nature of variations of the physical quantities with spatial co-ordinate is analyzed. The theory and numerical computations are found to be in close agreement. Some special cases of interest have been inferred from the present study for validation.