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:
Nov. 26, 2013
Filed:
Sep. 14, 2012
Yoshiaki Tanaka, Nara, JP;
Takakiyo Harigai, Kyoto, JP;
Hideaki Adachi, Osaka, JP;
Eiji Fujii, Osaka, JP;
Yoshiaki Tanaka, Nara, JP;
Takakiyo Harigai, Kyoto, JP;
Hideaki Adachi, Osaka, JP;
Eiji Fujii, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The purpose of the present invention is to provide a BNT-BT piezoelectric film having a higher crystalline orientation, a higher piezoelectric constant, and a higher ferroelectric property. The present invention is directed to a piezoelectric film comprising a first electrode having only a (110) orientation; a (NaxBi0.5)TiO0.5x+2.75—BaTiO layer having only a (110) orientation, a (Bi,Na)TiO3—BaTiO3 layer having only a (110) orientation, and a second electrode, wherein a value of x is not less than 0.29 and not more than 0.40, and the first electrode, the (NaxBi0.5)TiO0.5x+2.75—BaTiO3 layer, the (Bi,Na)TiO3—BaTiO3 layer, and the second electrode are laminated in this order.