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Doping Effects in Pb(Mg1/3Nb2/3)O3-PbTiO3 Ceramics for High Power Transduction Applications

Published online by Cambridge University Press:  15 February 2011

Yun-Han Chen
Affiliation:
International Center for Actuators and Transducers, Material Research Laboratory The Pennsylvania State University, University Park, PA 16802
Senji Hirose
Affiliation:
Yamagata University, Yonezawa-shi, Yamagata 992, Japan
Dwight Viehland
Affiliation:
Code 2132; Naval Undersea Warfare Center, Newport, RI 02835
Kenji Uchinol
Affiliation:
International Center for Actuators and Transducers, Material Research Laboratory The Pennsylvania State University, University Park, PA 16802
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Abstract

Piezoelectric ceramics are potential high-power electro-acoustic sources, and have been studied for many years. However, when these devices are driven under high level vibration, the electromechanical characteristics depart significantly due to the loss and nonlinear behavior in terms of elastic and dielectric properties. In this paper, we present results concerning the development of modified Pb(Mgl/3Nb2/3)O3-PbTiO3 (PMN-PT) ceramics for high-power application. We have focused efforts on base PMN-PT compositions close to the morphotropic phase boundary. Different mono-doping have been studied to understand the doping effects on the properties of PMN-PT ceramics and, moreover, to improve the properties for the high-power application. Of all the substitutents investigated in this study, Mn-doping was found the only one to improve the properties of PMN-PT significantly for high-power application by reducing the total loss (including mechanical loss as well as the dielectric loss), yet keeping the coupling factor constant. This work is supported by Office of Naval Research.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

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