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Spark-plasma-sintering temperature dependence of structural and piezoelectric properties of BNT–BT0.08 nanostructured ceramics

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Abstract

(Bi0.5Na0.5)TiO3 doped with 8 mol% BaTiO3 powder prepared by sol–gel was compacted and sintered by spark-plasma-sintering method. The influence of spark-plasma-sintering temperature on the densification and piezoelectric properties of these ceramics was studied. Starting from BNT–BT0.08 powder gel with a microstructure consisting of particles with average size of 50 nm, ceramics with grain size of 60–90 nm and density of about 98.9–99.6% of the theoretical density were obtained by spark-plasma-sintering at 800–900 °C. Increasing the sintering temperature by SPS from 800 to 900 °C lead to the increase of d 33, k p, ε T33 and, decrease of Q m. Typical d 33 and k p values of BNT–BT0.08 ceramics sintered by spark-plasma-sintering at 900 °C were 8 and 0.029, respectively.

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Acknowledgements

The authors gratefully acknowledge the Romanian Research Ministry PNCDI II, Contract no. 72-153/2008, to the European Program COST MP0904 Single- and multiphase ferroics and multiferroics with restricted geometries (SIMUFER) and to the “Nucleu”-project, PN09-450103, from the National plan for RDI, funded by the Romanian Ministry of Education and Research, and the National Authority for Scientific Research for financial support.

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Authors and Affiliations

  1. National Institute of Materials Physics, P.O. Box MG-7, 077125, Bucharest, Magurele, Romania

    Marin Cernea & Gheorghe Virgil Aldica

  2. IPECC SRL, 48018, Faenza, Italy

    Fabio Fochi

  3. University Politehnica of Bucharest, Faculty of Applied Chemistry and Materials Science, Bucharest, Romania

    Bogdan Stefan Vasile

  4. METAV-R&D S, P.O. 22, Bucharest, Romania

    Roxana Trusca

  5. National Research Council-Research Institute of Science and Technology for Ceramics, Via Granarolo 64, I-48018, Faenza, Italy

    Carmen Galassi

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  1. Marin Cernea
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  2. Fabio Fochi
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  3. Gheorghe Virgil Aldica
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  4. Bogdan Stefan Vasile
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  5. Roxana Trusca
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  6. Carmen Galassi
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Correspondence to Marin Cernea.

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Cernea, M., Fochi, F., Aldica, G.V. et al. Spark-plasma-sintering temperature dependence of structural and piezoelectric properties of BNT–BT0.08 nanostructured ceramics. J Mater Sci 47, 3669–3673 (2012). https://doi.org/10.1007/s10853-011-6215-z

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  • DOI: https://doi.org/10.1007/s10853-011-6215-z

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