2O 3 doped Ba 0.9Ca 0.1Ti 0.9Sn 0.1O 3 ceramics with improved piezoelectric properties]]>

摘要

AbstractLead-free Ba0.90Ca0.10Ti0.90Sn0.10O3-xY2O3(BCTSY, x=0–0.09) ceramics were prepared by traditional solid-state sintering method. All the BCTSY samples showed pure perovskite structures without detectable impurity. Orthorhombic/tetragonal phase coexisted in the sample of x=0.03 to 0.07. Remarkable enhancement of the electric properties were achieved at x=0.03 with d33of 650 pC/N, Kpof 59.6%, and the remnant polarization Prof 10.2μC/cm2. The strengthened temperature stability of piezoelectricity is beneficial to the application of the piezoceramics.]]>