Enhanced piezoelectricity in Pb(Zr0.48Ti0.52)O3-Pb(Mn1/3Sb2/3)O3-Pb(Mg1/ 3Ta2/3)O3 ceramics through the synergistic effect of defect engineering and lattice distortion
JOURNAL OF ALLOYS AND COMPOUNDS(2023)
摘要
With the increasing demand for industrial applications, it has become crucial to develop special high-power devices that can achieve both high piezoelectric performance and large mechanical quality factor. In this work, we prepared quaternary piezoelectric ceramics, namely (0.95-x)Pb(Zr0.48Ti0.52)O3-xPb(Mg1/3Ta2/3)O30.05Pb(Mn1/3Sb2/3)O3 (PZT-PMT-PMS), using a traditional solid-state route. These ceramics exhibit an excellent mechanical quality factor and low loss. By adding an appropriate amount of PMT (x = 0.09), the Mg2+ ions were homogeneously incorporated into the crystal lattice, resulting in a reduction in the content of the tetragonal phase. The formation of (Mg & PRIME;Zr,Ti - V..O) defect dipoles has been studied through Rietveld refinement, which indicates that defect dipoles can hinder domain-wall motion, strengthen the pinning effect, and result in a "harder" performance. Moreover, the high asymmetry caused by large lattice distortion, regulates the piezoelectric properties. The sample shows the optimal performance when the PMT content is 0.09, with d33 = 430 pC/N, Qm = 1740, TC = 258 degrees C, & epsilon;r = 1740, tan & delta; = 0.16 %, Pr = 44.5 & mu;C/cm2, and kp = 0.569.
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关键词
Defect dipoles,Mechanical quality factor,PZT-PMS-PMT ceramics,Lattice distortion
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