Bridging phases at the morphotropic boundaries of lead oxide solid solutions
By B. Noheda, D. E. Cox. 2005
218 citations recorded by the source corpus.
Ceramic solid solutions of PbZr1− x T x O3 (PZT) with compositions x≃ 0.50 are well-known for their extraordinarily large piezoelectric responses. The latter are highly anisotropic, and it was recently shown that, for the rhombohedral compositions (x ≲ 0.5), the piezoelectric coefficients were largest away from the polar direction, contrary to common belief. Shortly afterwards a low-symmetry monoclinic phase was observed by synchrotron X-ray diffraction at around x = 0.50. Similar behavior and features are also present in a number of related lead-based strongly-piezoelectric single crystals, such as Pb(Mg1/3Nb2/3)1− x Ti x O3, Pb(Zn1/3Nb2/3)1− x Ti x O3, and Pb(Sn1/2Nb1/2)1− x Ti x O3, with piezoelectric coefficients of about 2500 pm V−1, the highest values recorded to date. Recent experimental and theoretical work has greatly improved our understanding of these technologically important systems, but there are still some open questions. In this review, we summarize the most recent progress in the field.
Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/6dd2b99ece05a6b18542908949b992e9e5effbd1
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Citations in the corpus
- Modern Physics of Ferroelectrics: Essential Background (2007, background): “Recently, careful re-examination of the phase diagram showed the presence of a previously unknown monoclinic phase in a very narrow composition range in the vicinity of the MPB [38] (see also the recent review in [ 40 ]).”