Piezoelectric ceramics

Details Piezoelectric ceramics Piezoelectric ceramics

1978-09-06

1981-01-06

Cooper, Jack

Compositions

Piezoelectric

C04B 3546

Patent

active

042435412

ABSTRACT:
Piezoelectric ceramics containing PbO and TiO.sub.2 as its principal constituents, and further containing 0.5 to 3.7 mol-% of Nd.sub.2 O.sub.3 and 0.2 to 1.5 mol-% of MnO.sub.2. Since the piezoelectric ceramics is low in the dielectric constant and is especially small in the temperature coefficient of the delay of surface acoustic waves, it is suitable for a surface acoustic wave device. Piezoelectric ceramics in which 0.3 to 3.3 mol-% of In.sub.2 O.sub.3 is further added to the above-mentioned composition has a still smaller temperature coefficient of the delay of surface acoustic waves, and it is also possible to make this coefficient zero.

REFERENCES:
patent: 3502913 (1970-03-01), Osada
patent: 3642637 (1972-02-01), Iregami et al.

Affiliated with

Also associated with

Rating

Piezoelectric ceramics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoelectric ceramics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric ceramics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-284024