Abstract
The electromechanical properties of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 <001> oriented crystals have been investigated under unaxial stress (σ). The results demonstrate enhanced piezoelectric coefficients and electroacoustic power densities with increasing σ. However, these increases are accompanied by significant increases in hysteretic losses. The results also demonstrate that the electromechanical coupling coefficient (~0.92) is relatively independent of a between 0 and 6x107 N/m2. Future transducer designs can rely on piezocrystals offering a k33 of 0.92, 10 dB more power, and low losses under operational conditions of σ<107 N/m2 and 5<T<40°C.
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© 2003 Kluwer Academic Publishers
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Viehland, D., Li, J.F. (2003). Electromechanical Performance Advantages and Limitations of <001>-Oriented Pb(Mg1/3Nb2/3)O3-PbTiO3 Crystals. In: Yang, J.S., Maugin, G.A. (eds) Mechanics of Electromagnetic Solids. Advances in Mechanics and Mathematics, vol 3. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0243-8_6
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DOI: https://doi.org/10.1007/978-1-4613-0243-8_6
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