Dielectric and piezoelectric properties of flexible 0-3 piezoelectric composites prepared by coprecipitated (Pb/sub 0.5/Bi/sub 0.5/) (Ti/sub 0.5/(Fe/sub 1-x/MN/sub x/)/sub 0.5/)O/sub 3/ (x= 0.00-0.02) ceramic powders

Piezoelectric (Pb/sub 0.5/Bi/sub 0.5/)(Ti/sub 0.5/(Fe/sub 1-x/Mn/sub x/)/sub 0.5/)O/sub 3/ (x=0.00-0.02) ceramic powder was prepared by alcohol dehydration of an aqueous multicomponent ammonium citrate solution. The tetragonal phase with the desired stoichiometry formed after heat treatment at as low as 800 degrees C. A high tetragonality (c/a ratio of 1.140+or-0.001) was achieved after heat treatment at 1000 degrees C for 1 h. Flexible 0.3 composites prepared from the 1000 degrees C powder (x=0.01) and Eccogel polymer exhibited piezoelectric charge coefficients (d/sub 33/) of 60 pC/N and a voltage coefficients (g/sub 33/) of 205*10/sup -3/ Vm/N.<
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