Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 94, Issue 10, Pages 3181-3183Publisher
WILEY
DOI: 10.1111/j.1551-2916.2011.04744.x
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Funding
- National Natural Science Foundation of China [50802038]
- Ph.D. Programs Foundation of Shandong Province of China [BS2010CL010]
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We report on excellent temperature stability of the Dy-doped (Ba0.99Ca0.01)(Ti0.98Zr0.02)O-3 (BCZT-D) ceramics with high piezoelectric coefficient of d(33) = 366 pC/N and planar electromechanical coupling factor of k(p) = 43.0%. Meanwhile, Curie temperature of the BCZT-D ceramics is found to be 125 degrees C. Greatly improved temperature stability of the electromechanical coupling coefficients is found over a common usage temperature range between 20 degrees C and 100 degrees C, in which the BCZT-D ceramics exhibit pure tetragonal phase. The results indicate that the BCZT-D ceramics are promising lead-free materials for practical applications.
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