Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics

Dittmer R, Aulbach E, Jo W, Webber KG, Rödel J (2012)


Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2012

Journal

Publisher: Elsevier

Book Volume: 67

Pages Range: 100-103

DOI: 10.1016/j.scriptamat.2012.03.031

Abstract

Blocking stress (sigma(b)) and free strain (S-f) are the most important parameters for piezoelectric actuators, both having a decisive impact on the electromechanical performance. Here, we report on the blocking stress of lead-free piezoceramics, using 0.94Bi(1/2) Na1/2TiO3-0.06BaTiO(3) (6BT) and 0.98(0.94Bi(1/2)Na(1/2)TiO(3)-0.06BaTiO(3))-0.02K(0.5)Na(0.5)NbO3 (2KNN) as prototypical compositions. While 6BT delivers high sigma(b) = 102 MPa at 125 degrees C, the addition of 2 mol.% K0.5Na0.5NbO3 results in a large sigma(b) = 124 MPa at room temperature. Therefore, both lead-free materials outperform lead zirconate titanate at their respective peak temperatures. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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APA:

Dittmer, R., Aulbach, E., Jo, W., Webber, K.G., & Rödel, J. (2012). Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics. Scripta Materialia, 67, 100-103. https://dx.doi.org/10.1016/j.scriptamat.2012.03.031

MLA:

Dittmer, Robert, et al. "Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics." Scripta Materialia 67 (2012): 100-103.

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