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ELECTRIC MODULUS AND DIELECTRIC STUDIES OF ALIZARIN DOPED ANTHRAQUINONE

K. P. CHANDRA

Department of Physics, D.D.U. Gorakhpur University, Gorakhpur — 273 009, India

Permanent address: Department of Physics, S.M. College (T.M. Bhagalpur University), Bhagalpur — 812 001, India.

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R. N. GUPTA

Department of Physics, D.D.U. Gorakhpur University, Gorakhpur — 273 009, India

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, and

K. PRASAD

University Department of Physics, T.M. Bhagalpur University, Bhagalpur — 812 007, India

Corresponding author.

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https://doi.org/10.1142/S0217979208039411Cited by:4 (Source: Crossref)

Abstract

The electrical properties of alizarin doped anthraquinone were investigated using a complex impedance spectroscopy technique. Dielectric study revealed a phase transition from the semiconducting to the conducting state at 53°C. The dielectric relaxation was found to be of non-Debye type. Evidence of temperature-dependent electrical relaxation phenomena as well as a positive temperature coefficient of conductivity character were observed in the sample. The frequency dependence of AC conductivity data followed a power law. Electric modulus as well as AC conductivity analyses indicated the possibility of a hopping mechanism for electrical conduction in the system. The activation energy and minimum hopping distance were estimated from the AC conductivity data.

Keywords:

PACS: 42.70.Jk, 72.80.Le, 77.84.Jd, 77.22.Gm, 84.37.+q, 72.20.-i

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