A generalized rule for large piezoelectric response in perovskite oxide ceramics and its application for design of lead-free compositions

Cheol Woo Ahn, Deepam Maurya, Chee Sung Park, Sahn Nahm, Shashank Priya

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Abstract

We present a general rule for the perovskite oxide ceramics: "A large piezoelectric constant in AB O3 perovskite ceramics can be obtained by tuning the weight ratio of A and B sites, WA/WB or W B/WA to 3. Piezoelectric constant decreases significantly when WA/WB or WB/WA is in the range of 0.5-2.0, termed as forbidden zone." A comparative analysis was conducted for broad range of materials demonstrating the applicability of proposed rule. Further based on this rule optimized compositions in BaTiO3 and alkali niobate based systems were developed. Polycrystalline ceramics in modified BaTiO3 system were found to exhibit longitudinal piezoelectric coefficient (d33) of 330 pC/N, while alkali niobate ceramics showed d33 of 294 pC/N.

Original languageEnglish (US)
Article number114108
JournalJournal of Applied Physics
Volume105
Issue number11
DOIs
StatePublished - 2009
Externally publishedYes

Bibliographical note

Funding Information:
The authors gratefully acknowledge financial support from Office of Basic Energy Sciences, Department of Energy (Contract No. DE-FG02-07ER46480); DMR, National Science Foundation (Materials World Network Program); and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea. The authors would also like to thank NCFL, VT for their help in characterization.

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