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:
Jul. 10, 2012
Filed:
Feb. 04, 2010
Kenji Takashima, Saitama, JP;
Makoto Kubota, Yokohama, JP;
Soichiro Okamura, Tokyo, JP;
Takashi Nakajima, Tokyo, JP;
Tomosato Okubo, Fujimino, JP;
Yosuke Inoue, Tokyo, JP;
Kenji Takashima, Saitama, JP;
Makoto Kubota, Yokohama, JP;
Soichiro Okamura, Tokyo, JP;
Takashi Nakajima, Tokyo, JP;
Tomosato Okubo, Fujimino, JP;
Yosuke Inoue, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Tokyo University of Science Educational Foundation Administrative Organization, Tokyo, JP;
Abstract
Provided are a ferroelectric material having good ferroelectricity and good insulation property, and a ferroelectric device using the ferroelectric material. In the present invention, the ferroelectric material includes a metal oxide having a perovskite-type crystal structure, in which: the metal oxide contains bismuth ferrite whose iron is substituted by manganese, and at least one of a copper oxide and a nickel oxide; the bismuth ferrite is substituted by manganese at a substitution ratio of 0.5 at. % or more to 20 at. % or less with respect to a total amount of iron and manganese; and at least one of the copper oxide and the nickel oxide is added in an amount of 0.5 mol % or more to 20 mol % or less with respect to the bismuth ferrite whose iron is substituted by manganese.