Invention Grant
- Patent Title: Electric field ferromagnetic resonance excitation method and magnetic function element employing same
- Patent Title (中): 电场铁磁共振激励法和磁功能元件采用相同
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Application No.: US14240158Application Date: 2012-06-18
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Publication No.: US09460769B2Publication Date: 2016-10-04
- Inventor: Takayuki Nozaki , Yoshishige Suzuki
- Applicant: Takayuki Nozaki , Yoshishige Suzuki
- Applicant Address: JP Tokyo
- Assignee: National Institute of Advanced Industrial Science and Technology
- Current Assignee: National Institute of Advanced Industrial Science and Technology
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2011-181654 20110823
- International Application: PCT/JP2012/065539 WO 20120618
- International Announcement: WO2013/027479 WO 20130228
- Main IPC: G11B5/147
- IPC: G11B5/147 ; G11C11/16 ; H01L29/66 ; H01L43/08 ; H03B15/00 ; H01F41/30 ; B82Y40/00 ; H01F10/32

Abstract:
To realize an electric field-driven type ferromagnetic resonance excitation method of low power consumption using an electric field as drive power, and provide a spin wave signal generation element and a spin current signal generation element using the method, a logic element using the elements, and a magnetic function element such as a high-frequency detection element and a magnetic recording device using the method. A magnetic field having a specific magnetic field application angle and magnetic field strength is applied to a laminate structure in which an ultrathin ferromagnetic layer sufficiently thin so that an electric field shield effect by conduction electrons does not occur and a magnetic anisotropy control layer are directly stacked on each other and an insulation barrier layer and an electrode layer are arranged in order on an ultrathin ferromagnetic layer side. An electric field having a high-frequency component of a magnetic resonance frequency is then applied between the magnetic anisotropy control layer and the electrode layer, thereby efficiently exciting ferromagnetic resonance in the ultrathin ferromagnetic layer.
Public/Granted literature
- US20150085569A1 ELECTRIC FIELD FERROMAGNETIC RESONANCE EXCITATION METHOD AND MAGNETIC FUNCTION ELEMENT EMPLOYING SAME Public/Granted day:2015-03-26
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