Abstract
Modified lead titanate ceramics were prepared from batches with compositions PbxCa0.30Ti094 (Co1/2W1/2)0.06O23+x (x = 0.67, 0.68, 0.69, 0.70, 0.71 and 0.72) with 1 mol % MnO to determine the effect of PbO content on the dielectric and piezoelectric properties. An increase in PbO content increased the grain size and reduced the planar coupling factorkp. The dielectric constant ɛ T 33 /ɛ0 and the piezoelectric constantd33 reached a maximum for a ceramic made from a batch with stoichiometric PbO content (x = 0.70).
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