The dielectric behaviour of lithium acetylacetonate

Abstract

The dielectric constant and loss tangent of lithium acetylacetonate [Li(ac.ac)] have been measured at different frequencies for different temperatures. The results show that the dielectric behaviour of Li(ac.ac) is different from that of Na(ac.ac) and K(ac.ac) which exhibit a ferroelectric-like behaviour. The activation energy of Li (ac.ac) was found to be 0.54 eV, nearly half the value for K(ac.ac). The infrared absorption spectra of Li(ac.ac) shows that in this compound the lithium metal resembles group I1 rather than group I.

Dielectric Behaviour of Potassium Acetylacetonate

“…A peak value in the dielectric constant was observed and has been ascribed to some stuctural irreversible change from orthorhombic phase to triclinic stucture. The dielectric properties of potassium acetylacetonate K(acac) were also studied [2]. Two peaks were observed in the dielectric constant versus temperature curve at 283 and 294 K, which were explained as irreversible transition temperatures.…”