Due to the environmental impact of lead, there is a considerable focus on the synthesis of lead-free piezoelectric materials. Pb(Zr,Ti)O3 (PZT) is the current industry standard for piezoelectric ceramics, but has a major disadvantage in that it contains lead, which is increasingly regulated. To date, very few lead-free materials compete with the outstanding properties that are observed in PZT. A-site bismuth perovskites appear to be the most viable alternative, as Bi3+ ions will also have lone-pair distortions similar in magnitude to their lead-based counterparts. Although replacing lead with bismuth may seem straightforward, it adds a layer of complexity as few A-site bismuth perovskites are stable under ambient pressure with BiFeO3, Bi2(Mn4/3Ni2/3)O6, and Bi(Fe2/8Mg3/8Ti3/8)O3 as the only examples.1-3 This talk will be broad in scope, discussing our group’s research in the synthesis and characterization of new lead-free piezoelectric materials. (1) Filip'ev, V. S.; Smolyaninov, N. P.; Fesenko, E. G.; Belyaev, I. N. Kristallografiya 1960, 5. (2) Hughes, H.; Allix, M.; Bridges, C. A.; Claridge, J. B.; Kuang, X.; Niu, H.; Taylor, S.; Song, W.; Rosseinsky, M. J. J. Am. Chem. Soc 2005, 127. (3) Bridges, C. A.; Allix, M.; Suchomel, M. R.; Kuang, X.; Sterianou, I.; Sinclair, D. C.; Rosseinsky, M. J. Angew. Chem. Int. Ed. 2007, 46.

Piezoelectrics: Putting the "squeeze" on new materials

251st National Meeting (2016)

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