Compositions for high power piezoelectric ceramics

Details Compositions for high power piezoelectric ceramics Compositions for high power piezoelectric ceramics

2007-12-04

2007-12-04

Koslow, C. Melissa (Department: 1755)

Compositions

Piezoelectric

Lead, zirconium, titanium or compound thereof containing

C501S134000, C501S135000

Reexamination Certificate

active

11104373

ABSTRACT:
Piezoelectric ceramics of the formula Pb(1-z)Mz(Mg1/3Nb2/3)x(ZryTi1-y)1-xO3where M can be either Sr or Ba or both, and x is between 0.3 and 0.6, y is between 0.2 and 0.5, and z is between 0.04 and 0.08. The piezoelectric ceramic is provided as a composite perovskite structure, and may additionally include materials or dopants such as: PbO, HfO2, TeO2, WO3, V2O5, CdO, Tm2O3, Sm2O3, Ni2O3, and MnO2. The piezoelectric ceramics can be used to fabricate piezoelectric elements for a wide variety of devices that can be fabricated to exhibit high power applications including miniaturized displacement elements, buzzers, transducers, ultrasonic sensors and ultrasonic generators, and the like.

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Structure and the location of the morphotropic phase boundary region in (1—x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3; A. Singh and D. Pandey; School of Materials and Technology, Institute of technology, Banaras Hindu Univ., Varanasi 221005, India.
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