Invention Grant
- Patent Title: Multi-level magnetic recording apparatus utilizing cooperative magnetization dynamics induced by spin-torque oscillator
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Application No.: US14926966Application Date: 2015-10-29
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Publication No.: US09704552B2Publication Date: 2017-07-11
- Inventor: Kiwamu Kudo , Tazumi Nagasawa , Hirofumi Suto , Koichi Mizushima , Rie Sato
- Applicant: KABUSHIK KAISHA TOSHIBA
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Priority: JP2014-258857 20141222
- Main IPC: G11B5/31
- IPC: G11B5/31 ; G11C11/16 ; G11C11/56 ; G11B5/127 ; G11B5/265 ; G11B5/02 ; G11B5/012

Abstract:
According to one embodiment, a magnetic recording apparatus includes a spin-torque oscillator, a recording unit, and a controller. The spin-torque oscillator includes an oscillation layer. The recording unit includes at least one recording layer. Magnetization reversal in each recording layer is performed by excitation of cooperative dynamics between magnetization of the oscillation layer and magnetization of the recording layer. The controller controls precession of the magnetization of the oscillation layer, which is induced by application of an electric current to the spin-torque oscillator.
Public/Granted literature
- US20160180906A1 MAGNETIC RECORDING APPARATUS Public/Granted day:2016-06-23
Information query
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