Piezoelectric ceramic compositions

摘要

Piezoelectric ceramic compositions having low dissipation factor, high mechanical quality factor, certain specified electromechanical coupling coefficients and high time stability of resonant resistance, and comprising the ternary system Pb(Sn1/3Sb2/3)O3-PbTiO3-PbZrO3 and containing at least one oxide selected from the group consisting of MnO2, CoO, Cr2O3, Fe2O3 and NiO in a total quantity equivalent to from 0.1 to 5 weight percent.