The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2011
Filed:
Nov. 06, 2008
Hirofumi Yamaguchi, Komaki, JP;
Shuichi Ozawa, Nagoya, JP;
Hirofumi Yamaguchi, Komaki, JP;
Shuichi Ozawa, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
The piezoelectric/electrostrictive body is represented by a composition formula ABO(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 Iof the (001) face and a diffraction peak intensity Iof the (100) face of I/I≦1, in an X-ray diffraction pattern in the same plane after the polarization treatment.