Study of Dielectric Relaxation in Zn, Cd, and Hg, Ethanolamine Complexes

The dielectric constant ε` and dielectric loss ε`` for Zn(II), Cd(II) and Hg(II) ethanolamine complexes, which become semiconducting materials in their ligand structure, have been measured in the temperature (100-300K) and frequency (1kHz-13MHz). The temperature variation of ε` and ε`` does not have a peak within the frequency range of the investigations, unlike many semiconducting glasses. Howevere, the imaginary parts, M``, of the dielectric modulus, M*, have peaks indicating Deby-type dielectric relaxation behaviour with a distribution of relaxation times. The relaxation behaviour is thermally activated with activation energy of about 0.3 eV.