Thermally Stimulated Depolarisation Current Studies on Some Hydrogen-Bonded Crystals

Abstract

Thermally stimulated depolarisation current (TSDC) studies are carried out in three hydrogen‐bonded crystals, namely, (N2H6)SO4, (NH2)3H(SO4), and Li(NH4)SO4. These three crystals are chosen to represent three categories wherein the dipoles are induced by impurities in the crystal, the NH3 dipoles already exist in the crystal, and the crystal possesses inherent dipole moment. TSDC peaks are observed in all the three systems and their activation energies and frequency factors are evaluated. The observed peaks are explained taking into account the nature of impurity–vacancy dipoles and the dipoles inherently present in these systems.