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Title: AC conductivity and dielectric behaviour of CuZnSnO4 compound prepared by powder technology
Authors: Shaban, Salma M
Mahdi, Bushra S
Al-Haddad, Raad M S
Keywords: Materials;Dielectric constants;Conductivity;X-ray diffraction
Issue Date: Nov-2013
Publisher: NISCAIR-CSIR, India
Abstract: A new type of oxides like CuZnSnO4 compound was synthesized by powder technology and pressed it as a pellet of 8.4 mm diameter and 1 mm thickness. X-ray diffraction patterns for the prepared samples have been studied. The behaviour of the dielectric (i.e. dielectric constant ε1 and dielectric loss ε2) and ac conductivity have been investigated. The sharply decrease of dielectric constant ε1 was noticed at low frequency range and was independent of frequency at high frequency range. Otherwise, the variation of the dielectric loss ε2 with frequency is shown and the absorption peak located at 120 Hz frequency at room temperature and moves to higher frequency with the increase of temperature. It was found that after critical frequency, ac conductivity logs increases nonlinearly with the increase of temperature but there is no variation at low frequency up to the critical frequency. The frequency exponent (s) is determined, and the data suggest that s increases with temperature. The variation of s with temperature suggests that ac conduction is due to the correlated barrier hopping. These data confirmed that this compound has good stability at high frequencies for waveguide devices and is useful as dielectric material at low frequencies.
Page(s): 784-787
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.51(11) [November 2013]

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