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ac conductivity studies on the electron irradiated $BaZrO_3$ ceramic

Jali, VM and Aparna, S and Sanjeev, Ganesh and Krupanidhi, SB (2007) ac conductivity studies on the electron irradiated $BaZrO_3$ ceramic. In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 257 (1-2). pp. 505-509.

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Abstract

Barium zirconate $(BaZrO_3)$ powder samples were synthesized by ceramic method and their response to the high energy electron irradiation was studied in terms of their ac conductivity, dielectric constant and dielectric losses. Samples were irradiated with the 8 MeV electrons with an absorbed dose of 100 kGy. The ac conductivity is explained by the charge carrier hopping model. Irradiated $BaZrO_3$ samples exhibited a significant variation of the frequency dependent exponent (s). The ‘s’ parameter decreased after irradiation. The activation energy calculated from the Arrhenius plots was found to increase from 0.06 eV to 0.16 eV after irradiation.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier. "The DOI is currently only displayed."
Keywords: BaZrO3 ceramics;ac conductivity;Irradiation
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 30 Nov 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/11500

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