A laminated piezoelectric device obtained by alternately laminating the
piezoelectric layers containing Pb and the conducting layers containing
palladium as a conducting component, wherein the piezoelectric layer
formed between the two conducting layers has layer regions where Pb and
Pd are mixed together in the interfacial portions thereof relative to the
conducting layers, the layer regions having a thickness of not larger
than 3% of the thickness of the piezoelectric layer. The laminated
piezoelectric device is formed by co-firing the Pb-containing
piezoelectric layers and the palladium (Pd)-containing layers, the
piezoelectric layers therein having a large insulation resistance and
good piezoelectric characteristics.