Abstract
The effects of the complex donor and acceptor additives on the microstructure, piezoelectric and dielectric properties of PZT (Zr/Ti=53/47) ceramics were studied. A complex doping with the soft (La+3 and Nb+5) and hard (Fe+3 and/or Mn(+2,+3 or +4)) ions has been adopted. The complex doping of two or more elements is expected to combine the properties of donor and/or acceptor doped PZT, which could exhibit better stability or improved piezoelectric properties than those of the single element doped PZT. The complex doping caused various compensation effects for the piezoelectric properties of PZT ceramics; Mn addition to the La/Nb and Fe doped PZT composition led to the improved piezoelectric properties, i.e., enhanced Qm with remaining considerably high kP.
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