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ACTUATOR 2016 Manuscript A1.1

Author: Hubert Borgmann
Pages: 4
Language: English
Publication date: 01/06/2016
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Manuscript A1.1 published in Conference Proceedings ACTUATOR 2016
Electromechanical Properties of the Lead-Free
(1-x)Ba(Zr0.2Ti0.8)O3–x(Ba0.7Ca0.3)TiO3 System

V. Rojas1, J. Koruza1, M. Acosta1, D.R.J. Brandt1, K.G. Webber2, J. Rödel1
1 Technische Universität Darmstadt, Darmstadt, Germany.
2 Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany

The (1-x)Ba(Zr0.2Ti0.8)O3–x(Ba0.7Ca0.3)TiO3 piezoceramic is investigated as a possible alternative to lead containing piezoelectrics for actuator applications. Compositions with rhombohedral, orthorhombic, and tetragonal crystal structure were prepared and the large-signal piezoelectric response and blocking stress were evaluated at different electric fields. The rhombohedral and orthorhombic compositions showed the best properties with a blocking stress of -62 MPa at 2 kV/mm and a large signal d33* of 851 pm/V at 0.5 kV/mm, which exceeds the values reported for commercial soft-type PZT. The differences observed between different compositions were attributed to the changes in the strain mechanisms that occur due to the specific crystal
symmetries and their vicinity to the phase transition boundaries.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (

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