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Piezoelectric Properties of Relaxor-based Ferroelectric Materials Near the Morphotropic Phase Boundary

XIA Feng,YAO Xi Electronic Material Research Laboratory,Xi′an Jiaotong University,Xi′an,710049,China  
Relaxor-PT materials have good piezoelectric properties near the morphotropic phase boundary.In PMN-PT,PZN-PT crystals,d 33 is up to 1500pC/N,k p is up to 92%.In PMN,PZN,PNN ceramics system,d 33 reaches 690pC/N,680pC/N and 540pC/N respectively,Q m is about 100.The electromechanical coupling factors and piezoelectric constant are very large in these materials,and these characters make these materials promising candidates for high performance solid state actuators and piezoelectric transducers.
【CateGory Index】: TM22
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