Question

Analysis of the dielectric behaviour and associated properties of a glass. Could you explain briefly (little detailed and longer)

Answer 1

The analysis of dielectric properties of glass is useful to know the electric field distribution within the glass Dielectric properties are correlated with the electro-optic peoperties of the glasses. It is seen that with the increase in frequency there is decrease in dielectric constant and dielectric loss gradually decreases.If temperature is decreased the dielectric constant and dielectric loss decreases.This behaviour can be explained as the electron hopping between two different sites in glass due to the applied fiels. If temperatute is increased the jump frequency will increase. It becomes large compared to the frequency of the applied electric field. At low frequency the charge carriers hop easily with low free energy and they accumulate the sites with high free energy barries which results in net polarisation. This leads to increase in dielectric loss and dielectric constant.