Piezoelectric/electrostrictive material,...

Details Piezoelectric/electrostrictive material,... Piezoelectric/electrostrictive material,...

2007-06-21

2010-06-01

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C252S06290R

Reexamination Certificate

active

07728493

ABSTRACT:
A piezoelectric/electrostrictive material having a nonstoichiometric composition represented by a general formula (1):in-line-formulae description="In-line Formulae" end="lead"?(1−x)(BiaNabTiO3+δ)−x(KcNbO3+ζ)  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein 0.01≦x<0.08, a<0.5, 1.01≦(a/b)≦1.08, 0.92≦(a+b)/c<0.99, and 0.9≦c≦1.1, and ζ≠0 when δ=0 and δ≠0 when ζ=0.

REFERENCES:
patent: 6231779 (2001-05-01), Chiang et al.
patent: 6396196 (2002-05-01), Takeuchi et al.
patent: 7141911 (2006-11-01), Kita et al.
patent: 2004/0256953 (2004-12-01), Kitagawa et al.
patent: 44-17103 (1969-07-01), None
patent: 45-8145 (1970-03-01), None
Takenaka et al. “Mechanical Properties of (Bi1/2Na1/2)TiO3-based Piezoelectric Ceramics”.Silicates Industriels1993/7-8, p. 136-142.

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