Effect of Pressure on the Properties of Solids

The application of hydrostatic pressure on a solid material has a direct effect on the extra-nuclear electronic states of the constituent atoms in the material. In this work we have studied the effect of pressure on the various properties of the material such as structural behavior crystal lattice behavior magnetic behaviors of magnetic material transport behavior like electrical resistivity and valency change. We have calculated the Ce valency change in some compounds of cerium monochalcogenides CeX (X=O S Se and Te) and cerium monopnictides CeX (X=P As Sb and Bi). Clear effect of pressure on the cerium valency has been realized for each compound by this work.