Structural, ac conductivity and dielectric properties of 3-formyl chromone
Physics Department, Faculty of Education, Ain Shams University, Roxy, 11757, Cairo, Egypt
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Accepted: 13 June 2017
Published online: 27 July 2017
The structure for the powder of 3-formyl chromone was examined by X-ray diffraction technique in the range ( - . The configuration of Al/3-formyl chromone/Al samples was designed. The electrical and dielectric properties were studied as a function of frequency (42- Hz) and temperature (298-408K). The ac conductivity data of bulk of 3-formyl chromone varies as a power law with the frequency at different temperatures. The predominant mechanism for ac conduction was deduced. The ac conductivity shows a thermally activated process at different frequencies. The dielectric constant and dielectric loss were determined using the capacitance and dissipation factor measurements at different temperatures. The dielectric loss shows a peak of relaxation time that shifted to higher frequency with an increase in the temperature. The activation energy of the relaxation process was estimated.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, 2017