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. 18, 2014
Filed:
Jun. 24, 2011
Takami Arakawa, Kanagawa-ken, JP;
Takayuki Naono, Kanagawa-ken, JP;
Takamichi Fujii, Kanagawa-ken, JP;
Takami Arakawa, Kanagawa-ken, JP;
Takayuki Naono, Kanagawa-ken, JP;
Takamichi Fujii, Kanagawa-ken, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A piezoelectric film has a columnar crystal structure constituted of a plurality of columnar crystals, and contains a perovskite oxide represented by the following formula (P) as a main component:PbA[(ZrTi)B]O,  (P)where Pb and A are A-site elements, and A is at least one element selected from a group consisting of Bi, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ca, Sr and Ba; Zr, Ti and B are B-site elements, and B is at least one element selected from a group consisting of Nb, Ta and Sb; a is an amount of lead, b is an amount of the element A, c is a Zr/Ti ratio, d is an amount of the element B, e is an amount of oxygen; values of a, b and d satisfy a<1, a+b≧1, and 0<d<b; and a value of e is within a range where the perovskite structure is obtained and e=3 is standard.