Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7223278 | Optik - International Journal for Light and Electron Optics | 2018 | 10 Pages |
Abstract
The differential scanning calorimetric (DSC) and the thermogravimetric analysis (TGA) of alizarin red S (ARS) in the powder form were investigated. Subsequently, the structural studies of thermally evaporated ARS thin films of were performed using the Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD) and the transmission electron microscope (TEM). Furthermore, the dielectric properties and alternating current conductivity, Ïac, of ARS thin film in the frequency range 100â¯Hz-5â¯MHz through the temperature range 303-393â¯K were investigated. The activation energy, ÎEac, was found to decrease as the frequency increases. Moreover, both of experimental and theoretical results of the frequency exponent, S, and Ïac as a function of temperature outweigh the overlapping large polaron tunneling model (OLPT) for explain the conduction mechanism for ARS thin films. Also, the Cole-Cole diagram for dielectric modulus and the complex impedance at different temperatures were investigated.
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Authors
M.M. El-Nahass, H.M. Zeyada, N.A. El-Ghamaz, A.S. Awed,