Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 24, Issue 3, Pages 356-362Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201302102
Keywords
relaxor; ceramic-ceramic composites; actuators; lead-free piezoceramics
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [SFB595]
- state center AdRIA on adaptronics
- National Research Foundation of Korea (NRF) [2012K1A2B1A03000668]
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Recently developed lead-free incipient piezoceramics are promising candidates for off-resonance actuator applications with their exceptionally large electromechanical strains. Their commercialization currently faces two major challenges: high electric field required for activating the large strains and large strain hysteresis. It is demonstrated that design of a relaxor/ferroelectric composite provides a highly effective way to resolve both challenges. Experimental results in conjunction with numerical simulations provide key parameters for the development of viable incipient piezoceramics.
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