Piezoelectric ceramic composition and piezoelectric transformer

Details Piezoelectric ceramic composition and piezoelectric transformer Piezoelectric ceramic composition and piezoelectric transformer

1999-06-21

2000-09-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310359, 310366, 252 629, H01L 4108

Patent

active

061182095

ABSTRACT:
A piezoelectric ceramic composition represents a composition formula, (Pb.sub.u A.sub.1-u).sub.v {(Zn.sub.1/3 Nb.sub.2/3).sub.w (Sn.sub.1/3 Nb.sub.2/3).sub.x Ti.sub.y Zr.sub.z }.sub.2-v O.sub.3, where the symbol A is at least one component selected from a group consisting of La, Nd, Pr, and Bi, and u, v, w, x, y, and z are within ranges represented by the following Equations, characterized in that 0.1 to 3 mole percent of a Mn compound calculated in terms of MnO.sub.2 is added to said piezoelectric ceramic composition.

REFERENCES:
patent: 3998748 (1976-12-01), Nishida et al.
patent: 5320910 (1994-06-01), Banno
patent: 5402791 (1995-04-01), Saitoh et al.
patent: 5410209 (1995-04-01), Yamashita et al.
patent: 5721464 (1998-02-01), Dibbern et al.

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