Compositions – Piezoelectric
Patent
1993-06-23
1995-05-30
Bell, Mark L.
Compositions
Piezoelectric
501136, 501138, 501139, 501152, C04B 35472
Patent
active
054198445
ABSTRACT:
Disclosed herein are piezoelectric ceramics composed of lead titanate zirconate, which is expressed in PbZr.sub.1-z Ti.sub.z O.sub.3, where z=0.45 to 0.54, with 0.1 to 8 mole percent of the Pb atoms being replaced with at least one element selected from a group of Ca, Sr and Ba, and containing Mn in a range of 0.005 to 0.9 percent by weight of the whole in terms of MnO.sub.2.
REFERENCES:
patent: 4184971 (1980-01-01), Tanaka et al.
patent: 4226827 (1980-10-01), Nishida et al.
Patent Astracts of Japan, vol. 12, No. 196 and JP-A-62-298192, Jun. 7, 1988.
Ando Akira
Hase Kiyoshi
Kittaka, deceased Toshihiko
Yoneda Yasunobu
Bell Mark L.
Jones Deborah
Murata Manufacturing Co. Ltd.
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