Piezoelectric ceramic compositions

Details Piezoelectric ceramic compositions Piezoelectric ceramic compositions

1975-10-02

1980-07-01

Cooper, Jack

Compositions

Piezoelectric

C04B 3546, C04B 3548

Patent

active

042105463

ABSTRACT:
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(Sn.sub.1/3 Sb.sub.2/3)O.sub.3 -PbTiO.sub.3 -PbZrO.sub.3 and containing at least one oxide selected from the group consisting of MnO.sub.2, CoO, Cr.sub.2 O.sub.3, Fe.sub.2 O.sub.3 and NiO in a total quantity equivalent to from 0.1 to 5 weight percent.

REFERENCES:
patent: 3268453 (1966-08-01), Ouchi et al.
patent: 3518199 (1970-06-01), Tsubouchi et al.
patent: 3528918 (1970-09-01), Nishida et al.
patent: 3595795 (1971-07-01), Tsubouchi et al.
patent: 3661781 (1972-05-01), Ichinose et al.
patent: 3669887 (1972-06-01), Nishida et al.

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