Abstract
Triglycine sulphate (TGS) and polyvinyl alcohol (PVA) were mixed in different weight fractions, and the thermally stimulated depolarization current was studied. Two peaks are observed; the α-peak near the Curie point of TGS and the β-peak at a higher temperature. The latter is due to the neutralization of different types of space charges. It was found that the activation energy increased in the β-region and decreased in the α-region as the PVA content increased. This is probably due to the internal field of TGS dipoles. Other effects such as thermal hysteresis were studied and the role of the polarizing field was explored.