Patent ID: 6692651
Filing Date: 2004-02-17
Classification: C04B,H01L

Abstract:
Piezoelectric ceramic material based on lead zirconate titanate, characterised in that it corresponds to the general formulation:(1âˆ’uâˆ’v)Pb(ZrxTi1âˆ’x)O3âˆ’uA1+B5+O3âˆ’v(Sr1âˆ’yBay)2Nb2O7 whereinA1+ stands for alkali metal ions, B5+ stands for a pentavalent metal ion from the series Nb, Ta and Sb, and x, y, u and v have the following definitions: 0.40&lE;x&lE;0.55, 0&lE;y&lE;1.0, and 0&lE;0.05.