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:
Dec. 15, 2009
Filed:
Jun. 04, 2004
Yoshinori Tokura, Tsukuba, JP;
Masashi Kawasaki, Tsukuba, JP;
Hiroyuki Yamada, Tsukuba, JP;
Yoshihiro Ogawa, Tsukuba, JP;
Yoshio Kaneko, Chiba, JP;
Yoshinori Tokura, Tsukuba, JP;
Masashi Kawasaki, Tsukuba, JP;
Hiroyuki Yamada, Tsukuba, JP;
Yoshihiro Ogawa, Tsukuba, JP;
Yoshio Kaneko, Chiba, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Japan Science and Technology Agency, Kawaguchi-shi, JP;
Abstract
To provide a tunnel junction device having a high MR ratio even at room temperature, a tunneling film as a nonmagnetic layer of three-layer structure of LaMnO/SrTiO/LaMnOis arranged between a ferromagnetic metal material LaSrMnO() and a ferromagnetic metal film material LaSrMnO(). The tunneling film comprises two unit layers of LaMnO(A) arranged on the ferromagnetic metal material LaSrMnO(); five unit layers of SrTiO(B); and two unit layers of LaMnO(C) arranged at the interface between the SrTiO(B) and the ferromagnetic metal film material LaSrMnO().