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:
Oct. 02, 2012
Filed:
Apr. 20, 2010
Yoshihiro Tsuchiya, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
Migaku Takahashi, Miyagi, JP;
Masakiyo Tsunoda, Miyagi, JP;
Yoshihiro Tsuchiya, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
Migaku Takahashi, Miyagi, JP;
Masakiyo Tsunoda, Miyagi, JP;
TDK Corporation, Tokyo, JP;
Abstract
A microwave oscillation element of the present invention includes a lamination main part in which an oscillating layer that is a magnetization free layer and that generates a high frequency electromagnetic field by an excitation of a spin wave, a nonmagnetic intermediate layer, a polarizer layer, and a reference layer that is to be a base magnetic layer of a spin transfer due to application of current are layered in this order. The oscillating layer is made of CoIr, the polarizer layer is configured of CoCr or CoRu; and the nonmagnetic intermediate layer is configured of Cr or Ru. As a result, the efficiency of the spin injection is improved and the microwave oscillation element where the oscillation efficiency is excellent can be realized.