Abstract
The thermally stimulated processes in a samarium-modified lead titanate ferroelectric system are analyzed from the thermally stimulated depolarization discharge current. The discharge due to the space charge injected during the poling process, the pyroelectric response and a conduction process related to oxygen vacancies are evaluated considering a theoretical decomposition by using a numerical method. The pyroelectric response is separated from other components to evaluate the polarization behavior and some pyroelectric parameters. High remanent polarization, pyroelectric coefficient and merit figure values are obtained at room temperature.
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Acknowledgements
The authors wish to thank the Third World Academy of Sciences (RG/PHYS/LA Nos. 99-050, 02-225 and 05-043) and the ICTP, Trieste, Italy for financial support of the Latin-American Network of Ferroelectric Materials (NET-43). AP-B acknowledges the Conseil Regional Languedoc-Roussillon for her invitation to the University of Nîmes, France.
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Peláiz-Barranco, A., García-Wong, A.C., González-Abreu, Y. et al. Thermally stimulated processes in samarium-modified lead titanate ferroelectric ceramics. Appl. Phys. A 112, 419–423 (2013). https://doi.org/10.1007/s00339-012-7421-5
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DOI: https://doi.org/10.1007/s00339-012-7421-5