Invention Grant
- Patent Title: Magnetic memory element and nonvolatile memory device
- Patent Title (中): 磁存储元件和非易失性存储器件
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Application No.: US14184920Application Date: 2014-02-20
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Publication No.: US09025368B2Publication Date: 2015-05-05
- Inventor: Daisuke Saida , Minoru Amano , Hiroshi Imamura
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Minato-ku
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2013-050910 20130313
- Main IPC: G11C11/00
- IPC: G11C11/00 ; H01L43/02 ; G11C11/16 ; H01L43/08 ; H01L27/22

Abstract:
A magnetic memory element includes a first stacked unit and a second stacked unit. The first stacked unit includes a first ferromagnetic layer, a second ferromagnetic layer, and a first nonmagnetic layer. The second ferromagnetic layer is stacked with the first ferromagnetic layer. The second ferromagnetic layer has a first and second portion. The first and second portion has a changeable direction of magnetization. The second portion is stacked with the first portion in a stacking direction of the first ferromagnetic layer and the second ferromagnetic layer. A magnetic resonance frequency of the second portion is lower than a magnetic resonance frequency of the first portion. The first nonmagnetic layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The second stacked unit is stacked with the first stacked unit in the stacking direction. The second stacked unit includes a third ferromagnetic layer.
Public/Granted literature
- US20140269037A1 MAGNETIC MEMORY ELEMENT AND NONVOLATILE MEMORY DEVICE Public/Granted day:2014-09-18
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