Dielectric and polarization studies on some organic materials

Dielectric constant and dielectric loss (tanδ) of oxamide, thiooxamide, urea, thiourea and some methyl and ethyl derivatives of urea and thiourea have been measured. The deformation polarization for all the materials is calculated from the static dielectric constants. The electronic contribution to molecular polarization has been evaluated theoretically using atomic hybridization components. The atomic polarization is obtained as the difference between the deformation polarization and electronic contribution to the deformation polarization.