Piezoelectric material and piezoelectric element

Details Piezoelectric material and piezoelectric element Piezoelectric material and piezoelectric element

1997-10-30

1999-08-10

Koslow, C. Melissa

Compositions

Piezoelectric

Lead, zirconium, titanium or compound thereof containing

501134, 428403, 428472, 75229, 75234, 75252, 75247, 75314, 75235, H01L 4100

Patent

active

059354852

ABSTRACT:
A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.

REFERENCES:
Derwent and Chemical Abstract citatations for JP 7-232,962, Sep. 5, 1995.

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