Invention Grant
- Patent Title: Magnetoresistive device and magnetic random access memory
- Patent Title (中): 磁阻器件和磁性随机存取存储器
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Application No.: US12715699Application Date: 2010-03-02
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Publication No.: US08169817B2Publication Date: 2012-05-01
- Inventor: Masahiko Nakayama , Hiroaki Yoda , Tadashi Kai , Hisanori Aikawa , Katsuya Nishiyama , Jyunichi Ozeki
- Applicant: Masahiko Nakayama , Hiroaki Yoda , Tadashi Kai , Hisanori Aikawa , Katsuya Nishiyama , Jyunichi Ozeki
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-66274 20090318
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A magnetoresistive device includes: a magnetic recording layer including a first magnetic layer having perpendicular magnetic anisotropy, and a second magnetic layer having in-plane magnetic anisotropy and being exchange-coupled to the first magnetic layer, Curie temperature of the second magnetic layer being lower than Curie temperature of the first magnetic layer, and the magnetic recording layer having a magnetization direction perpendicular to a film plane; a magnetic reference layer having a magnetization direction which is perpendicular to a film plane and is invariable; and a nonmagnetic layer provided between the magnetic recording layer and the magnetic reference layer. The magnetization direction of the magnetic recording layer is changeable by spin-polarized electrons caused by flowing current between the magnetic recording layer and the magnetic reference layer in a direction perpendicular to the film plane.
Public/Granted literature
- US20100238717A1 MAGNETORESISTIVE DEVICE AND MAGNETIC RANDOM ACCESS MEMORY Public/Granted day:2010-09-23
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