首页|Influence of Atmospheric Annealing on the Conductivity of Mn-Doped PZT Ceramics
Influence of Atmospheric Annealing on the Conductivity of Mn-Doped PZT Ceramics
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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(Zr_(0.56)Ti_(0.44))O_3 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 V_O~· along with V_O~(··) and V_(pb)~(//)acancies.
PZTatmosphere annealing and conductivity measurements
M. Shuaib、D.A. Hall
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Institute of Industrial Control System, P.O. Box 1398, Rawalpindi, Pakistan
Manchester Materials Science Centre, Grosvenor Street, Manchester M1 7HS, UK
NETL
NSTL
Trans Tech Publications Ltd
