Piezoelectric ceramic composition and piezoelectric actuator

Details Piezoelectric ceramic composition and piezoelectric actuator Piezoelectric ceramic composition and piezoelectric actuator

2008-03-18

2008-03-18

Koslow, C. Melissa (Department: 1793)

Compositions

Piezoelectric

Lead, zirconium, titanium or compound thereof containing

C501S134000, C501S135000, C310S311000, C310S363000, C310S366000

Reexamination Certificate

active

11767313

ABSTRACT:
A piezoelectric ceramic composition has the composition formula (Pb(a-b)Meb){(Ni(1-c)/3Znc/3Nb2d/3)zTixZr(1-x-z)}O3, wherein Me represents at least one element selected from the group consisting of Ba, Sr and Ca; a, b, d, and x satisfy the inequalities 0.975≦a≦0.998, 0≦b≦0.05, 1<d≦1.3, and 0.39≦x≦0.47; and c and z are located in a region surrounded by lines connecting Point A (z=0.25, c=0.1), Point B (z=0.25, c=0.85), Point C (z=0.1, c=0.6), Point D (z=0.075, c=0.5), Point E (z=0.05, c=0.2), and Point F (z=0.05, c=0.1) or located on the lines in the z-c plane. Therefore, the piezoelectric ceramic composition is effective in achieving a large piezoelectric constant, a small dielectric constant, and a high Curie point. A piezoelectric actuator contains the piezoelectric ceramic composition.

REFERENCES:
patent: 2004/0021399 (2004-02-01), Ogawa et al.
patent: 2004/0072670 (2004-04-01), Kasukawa et al.
patent: 60-103079 (1985-06-01), None
patent: 2-258662 (1990-10-01), None
patent: 5-058729 (1993-03-01), None
patent: 11-322422 (1999-11-01), None
patent: 2002-226266 (2002-08-01), None
patent: 2003-335579 (2003-11-01), None
International Search Report and Written Opinion of the International Searching Authority dated Feb. 14, 2006.

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