Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
Volume 40, Issue 2A, Pages 687-693Publisher
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.40.687
Keywords
high power; piezoelectric; maximum vibration velocity; doping; Pb(Zr, Ti)O-3-Pb(Mn, Sb)O-3; rare earth metals
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Improved piezoelectric materials with higher vibrational velocities are needed to meet the demands of advanced high power electromechanical applications. In this paper, the effects of Eu and Yb substituents on the vibrational velocity and the piezoelectric properties of Pb(Zr, Ti)O-3-Pb(Mn, Sh)O-3 ceramics will he reported. Both of these substituents resulted in a significant increase in the mechanical quality factor Q(m), a decrease in the dielectric constant, and improvements in the electromechanical properties. Root mean square value (rms value) of vibration velocity as high as 1.0 m/s under an electric field of 10 kV/m (rms value) has been found for Yb-substituted specimens, which is 1.7 times higher than that of Pb(Zr, Ti)O-3-Pb(Mn, Sb)O-3 ceramics and 3 times higher than that of the commercialized hard Pb(Zr, Ti)O-3 ceramics.
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