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. 17, 2012
Filed:
Mar. 05, 2007
Xiaoyan Liu, Tsukuba, JP;
Shunji Takekawa, Tsukuba, JP;
Kazuya Terabe, Tsukuba, JP;
Shunichi Hishita, Tsukuba, JP;
Kenji Kitamura, Tsukuba, JP;
Xiaoyan Liu, Tsukuba, JP;
Shunji Takekawa, Tsukuba, JP;
Kazuya Terabe, Tsukuba, JP;
Shunichi Hishita, Tsukuba, JP;
Kenji Kitamura, Tsukuba, JP;
National Institute for Materials Science, Tsukuba-Shi, JP;
Abstract
A method of fixing a polarization-reversed region formed in a ferroelectric single crystal, including preparing a ferroelectric single crystal having a polarization-reversed region; and irradiating an ion beam or a neutral beam on the ferroelectric single crystal. The ferroelectric single crystal is a substantially stoichiometric lithium tantalate single crystal or a substantially stoichiometric lithium niobate single crystal, and the polarization-reversed region is fixed and any back switch and expansion of the polarization-reversed region are suppressed.