Publication Date:
2011-07-20
Description:
We report on excellent temperature stability of the Dy-doped ( Ba 0.99 Ca 0.01 )( Ti 0.98 Zr 0.02 ) 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°C. Greatly improved temperature stability of the electromechanical coupling coefficients is found over a common usage temperature range between 20°C and 100°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.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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