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Influence of A-site magnesium doping on structural and electrical properties of BaZr0.1Ti0.9O3 ceramics

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Abstract

The effects of the replacement of Ba2+ by off-center Mg2+ ions on the structural and electrical properties of BaZr0.1Ti0.9O3 ceramics were investigated. We show that the use of magnesium as A-site dopant favors the formation of the perovskite phase at a lower temperature and improves the densification of the ceramics. Combining XRD, SEM and electrical measurements, we determined that the solubility limit of Mg is ~ 2%. We show that Mg doping leads to a decrease in both the Curie temperature and remnant polarization of the ceramics. A 1% Mg content, however, enhances the room-temperature d33 piezoelectric coefficient due to the composition proximity to an impurity induced morphotropic phase boundary.

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Acknowledgements

We thank Pablo Diaz for the SEM measurements and Oscar de Sanctis for useful discussions. This work was sponsored by Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) and Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT) de la República Argentina. MGS thanks support from Consejo de Investigaciones de la Universidad Nacional de Rosario (CIUNR).

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Authors and Affiliations

  1. Instituto de Física Rosario, Universidad Nacional de Rosario-CONICET, 27 de Febrero 210 Bis, 2000, Rosario, Argentina

    A. Di Loreto, A. Frattini, R. Machado & M. G. Stachiotti

  2. Área Física, Dpto. de Química Física, FCByF, Universidad Nacional de Rosario, Rosario, Argentina

    A. Di Loreto & A. Frattini

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  1. A. Di Loreto
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  2. A. Frattini
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  3. R. Machado
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  4. M. G. Stachiotti
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Correspondence to M. G. Stachiotti.

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Di Loreto, A., Frattini, A., Machado, R. et al. Influence of A-site magnesium doping on structural and electrical properties of BaZr0.1Ti0.9O3 ceramics. J Mater Sci: Mater Electron 29, 19783–19790 (2018). https://doi.org/10.1007/s10854-018-0104-z

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