Mechanical constitutive behavior and exceptional blocking force of lead-free BZT-<i>x</i>BCT piezoceramics
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- David R. J. Brandt
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Matias Acosta
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Jurij Koruza
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Kyle G. Webber
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
書誌事項
- 公開日
- 2014-05-28
- DOI
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- 10.1063/1.4879395
- 公開者
- AIP Publishing
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説明
<jats:p>The free strain during unipolar electrical activation and the blocking stress are important figures of merit for actuator applications. The lead-free (1 − x)Ba(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3 (BZT-xBCT) system has been shown to display exceptional unipolar strain at room temperature, making it very attractive as an electroactive material for large displacement, low frequency actuation systems. In this work, the temperature- and composition-dependent blocking stress is measured with the proportional loading method. It was found that BZT-xBCT outperformed Pb(Zr1−xTix)O3 and Bi1/2Na1/2TiO3–based ceramics for electric fields up to 2 kV/mm.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 115 (20), 2014-05-28
AIP Publishing