Piezoelectric device, process for producing the...

Details Piezoelectric device, process for producing the... Piezoelectric device, process for producing the...

2008-05-06

2011-10-04

Benson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

08030828

ABSTRACT:
A piezoelectric device includes a piezoelectric film, and electrodes through which an electric field can be applied to the piezoelectric film along the thickness direction of the piezoelectric film. The piezoelectric film contains a ferroelectric phase in which the thickness direction and a normal of a plane determined by the spontaneous-polarization axis and the axis makes an angle θm satisfying the condition that −45 degrees<θm<+45 degrees and θm≠0 degrees. Further, the spontaneous-polarization axis or the axis may be perpendicular to the thickness direction of the piezoelectric film.

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J.J. Liu et al., Applied Physics Letters, vol. 88, pp. 032904-1-032904-3, 2006.

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