ac conductivity studies on the electron irradiated BaZrO3 ceramic

Barium zirconate (BaZrO3) 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 8MeV electrons with an absorbed dose of 10...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2007-04, Vol.257 (1-2), p.505-509
Main Authors: Jali, V.M., Aparna, S., Sanjeev, Ganesh, Krupanidhi, S.B.
Format: Article
Language:English
Subjects:
ac conductivity
BaZrO3 ceramics
Irradiation
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Summary:Barium zirconate (BaZrO3) 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 8MeV electrons with an absorbed dose of 100kGy. The ac conductivity is explained by the charge carrier hopping model. Irradiated BaZrO3 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 0.06eV to 0.16eV after irradiation.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2007.01.167