Influence of Atmospheric Annealing on the Conductivity of Mn-Doped PZT Ceramics

M. Shuaib; D.A. Hall

doi:10.4028/www.scientific.net/KEM.442.415

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 442Influence of Atmospheric Annealing on the...

Influence of Atmospheric Annealing on the Conductivity of Mn-Doped PZT Ceramics

Abstract:

Conductivity measurements were carried out on Mn-doped PZT ceramics in order to investigate the changes in defect chemistry with annealing, by identifying the charge carriers such as lead or oxygen vacancies. PZT compositions were prepared by sol-gel method in rhombohedral region Pb(Zr0.56 Ti0.44)O3 with Mn contents 0.4, 0.8, 1.5 and 2 wt.%. Nano-sized powder (~21nm) was obtained after calcination and bulk density values of >98% were achieved upon sintering. It was found that nitrogen annealing reduced the electrical conductivity strongly as compared to oxygen and air annealing and the possible charge carriers were single ionised oxygen vacancies along with and vacancies.

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Key Engineering Materials (Volume 442)

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415-421

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.442.415

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June 2010

Authors:

M. Shuaib, D.A. Hall

Keywords:

Atmosphere Annealing , Conductivity Measurements, PZT

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