Abstract
Perovskite lead titanate PbTiO3 (PT) powder and ceramics were synthesized using solid state reaction technique. The PT single phase powder was detected by X-ray diffraction where the phase obtained by sintering at 700 °C for 2 h. Morphology of the ceramics powder were studied using SEM–EDS. It was found that the particle size tend to increase with increasing sintering temperature. Hot stage microscope has been used to investigate the sintering curve of the calcined powder. The pure calcined powder was prepared as humidity sensors by the screen-printing technique. Thereafter, DC resistance measurements were performed in the presence of relative humidity at room temperature where the powder shows a poor sensitivity towards relative humidity. The phase transition from ferroelectric to paraelectric was identified by differential thermal analysis, and was detected at 493 °C. The difference between using alumina and platinum crucibles during processing has been discussed.
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Acknowledgements
Abd El-razek and A. Afify are grateful for the financial support of Erasmus-Mundus program [EMECW, WELCOME Project Action 2 (scholarship application number WELC1104035 and WELC11011869) respectively, Coordination Office: Politecnico di Torino, Turin, Italy]. Authors are immensely grateful to Dr. A. Mohamed (Chemistry Department, Taibah University, Saudi Arabia) for his comments on an earlier version of the manuscript.
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Mahmoud, A.Er., Viola, G., Afify, A.S. et al. Processing, structural and humidity sensing properties of PbTiO3 ceramic synthesized by solid state reaction. J Porous Mater 27, 947–958 (2020). https://doi.org/10.1007/s10934-016-0315-8
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DOI: https://doi.org/10.1007/s10934-016-0315-8