TY - GEN
T1 - Changes in mechanical quality factors with canted polarization for piezoelectric actuators
AU - Choi, M.
AU - Scholehwar, T.
AU - Hennig, E.
AU - Daneshpajooh, H.
AU - Uchino, K.
N1 - Funding Information:
The research is supported by Office of Naval Research under Grant No. N00014-17-1-2088
Publisher Copyright:
© ACTUATOR 2018 - 16th International Conference and Exhibition on New Actuators and Drive Systems, Conference Proceedings.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
N2 - Less heat generation and device reliability are essential for high-power piezoelectric actuators. With angled polarization, materials with strong shear properties show enhanced piezoelectricity, with increased elastic loss. This study aims to understand the changes of dielectric, elastic and piezoelectric loss factors with respect to the polarization orientation, and further utilize to design materials for the high-power devices. A new characterization method is proposed for better accuracy in the analysis. 1% Nb doped Pb(Zr,Ti)O3(PZT) are prepared and the loss parameters are analyzed with the effective parameters. For k31vibration mode, maximum quality factor could be obtained with canted polarization in Tetragonal structure under antiresonance drive. For k15vibration mode, maximum quality factor could be obtained with canted polarization in both Rhombohedral and MPB structure under resonance drive. The enhanced quality factor could be considered for the future high-power applications.
AB - Less heat generation and device reliability are essential for high-power piezoelectric actuators. With angled polarization, materials with strong shear properties show enhanced piezoelectricity, with increased elastic loss. This study aims to understand the changes of dielectric, elastic and piezoelectric loss factors with respect to the polarization orientation, and further utilize to design materials for the high-power devices. A new characterization method is proposed for better accuracy in the analysis. 1% Nb doped Pb(Zr,Ti)O3(PZT) are prepared and the loss parameters are analyzed with the effective parameters. For k31vibration mode, maximum quality factor could be obtained with canted polarization in Tetragonal structure under antiresonance drive. For k15vibration mode, maximum quality factor could be obtained with canted polarization in both Rhombohedral and MPB structure under resonance drive. The enhanced quality factor could be considered for the future high-power applications.
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M3 - Conference contribution
AN - SCOPUS:85096514887
T3 - ACTUATOR 2018 - 16th International Conference and Exhibition on New Actuators and Drive Systems, Conference Proceedings
SP - 69
EP - 70
BT - ACTUATOR 2018 - 16th International Conference and Exhibition on New Actuators and Drive Systems, Conference Proceedings
A2 - Borgmann, Hubert
PB - VDE Verlag GmbH
T2 - 16th International Conference and Exhibition on New Actuators and Drive Systems, ACTUATOR 2018
Y2 - 25 June 2018 through 27 June 2018
ER -