Abstract
Sintering and the electrical properties of lead zirconate titanate (PZT) containing excess amount of PbO over the Stoichiometric composition have been presented.
(1) The formation and sintering of PZT were nearly complete at about 900°C, as examined by X-ray diffraction analysis, dilatometry and electron microscopy.
(2) Abnormal expansion was observed between 400°C and 700°C. Well-defined ceramics have been obtained by heating slowly at this temperature range.
(3) An electro-mechanical coupling coefficient comparable to that of BaTiO3 has been obtained by firing at temperatures as low as 900°C.
