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- Title
Achieving Both High d and High Q for the Pb(ZrSnTi)FeO Ternary System for Use in High-Power Ultrasonic Transducers.
- Authors
Xing, Zhuo; Jin, Li; Wang, Tong; Hu, Qingyuan; Feng, Yujun; Wei, Xiaoyong
- Abstract
For applications in high power ultrasonic transducers, both high piezoelectric coefficients d and high mechanical quality factor Q are essential. In this work, acceptor-doped Pb(ZrSnTi)FeO ferroelectric ceramics with compositions near the morphotropic phase boundary were prepared by routine solid-state reaction. By introducing Fe ion into the perovskite crystal lattices, defect dipoles resulting from Fe ions and oxygen vacancies are formed, pinning extrinsic domain wall motion, and hence increasing Q but reducing d. It was found that substitution with 0.5 mol% Fe resulted in high d (390 pC/N) and high Q (540). The nonlinear dielectric responses of these ceramics were evaluated on the basis of the Rayleigh law. Both Rayleigh coefficients, $$\alpha$$ and $$\kappa_{\rm{init}},$$ are reduced by doping with the acceptor ion Fe, indicating that the intrinsic contribution and reversible domain wall mobility are both reduced.
- Subjects
DIELECTRIC properties of piezoelectric ceramics; RAYLEIGH scattering; ULTRASONIC transducers; SOLID state physics; PERMITTIVITY
- Publication
Journal of Electronic Materials, 2014, Vol 43, Issue 11, p3905
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-014-3311-2