Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-03-22
2011-03-22
SanMartin, J. (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07911117
ABSTRACT:
The piezoelectric/electrostrictive body is represented by a composition formula ABO3(A includes at least one element selected from the group consisting of Li, Na and K, and B includes at least one element selected from the group consisting of Nb, Ta, Sb and Mn), and the body is formed so that a main phase is a tetragonal system, and the orientation degree of a (001) face after a polarization treatment is smaller than that of a (100) face, in a plane vertical to the applying direction of an electric field applied so as to perform the polarization treatment. The present inventive piezoelectric/electrostrictive body has a ratio between a diffraction peak intensity I001of the (001) face and a diffraction peak intensity I100of the (100) face of I001/I100≦1, in an X-ray diffraction pattern in the same plane after the polarization treatment.
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Ozawa Shuichi
Yamaguchi Hirofumi
Burr & Brown
NGK Insulators Ltd.
SanMartin J.
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