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Correlations Between Microstructural And Impedance Properties Of Acceptor Segregated Nanosized Lead Titanate

Archana Shukla
Published 2012 · Materials Science

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Abstract The changes in the microstructural and impedance properties of La/Mn modified lead titanate nanoceramic due to the presence of eutectic liquid at low calcination temperature have been studied. The phase formation temperature of the samples is checked by thermogravimetric analysis technique and found to be as low as 400 °C. The tetragonal phase of the compounds is confirmed by High-resolution Transmission Electron Microscopy (HRTEM) technique. Melting of grain boundary by La substitution and segregation of manganese at grain boundary is observed via Field Emission Scanning Electron Microscopy (FESEM) technique. The impedance plots are used for simultaneous microstructural and electrical characterization of the samples and a good correlation between microstructural and impedance properties of compounds is found.
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