Piezoelectric properties of 'd/sub 31/-zero', 'd/sub 33/-zero' or 'd/sub h/-zero' 1-3 or 2-2 type composite consisting of 0-3 subcomposite of polymer/PbTiO/sub 3/ and that of polymer/PZT

摘要

Piezoelectric constants (d/sub 33/, d/sub h/, and d/sub 31/) of 1-3 and 2-2 composites consisting of 0-3 subcomposites of polymer/PbTiO/sub 3/ ceramic powder and polymer/PZT (lead zirconate titanate) ceramic powder were investigated in order to obtain a d/sub 31/-zero, d/sub 33/-zero, or d/sub h/-zero composite by changing the volume fraction of the subcomposites and giving them opposite polarities. Those subcomposites had different piezoelectric anisotropies but the same elastic-constant values. Good agreement between the theoretical and experimental results was observed.