Invention Grant
US09129635B2 Magnetic recording medium with controlled anisotropic fields and magnetic memory device
有权
具有受控各向异性磁场和磁存储器件的磁记录介质
- Patent Title: Magnetic recording medium with controlled anisotropic fields and magnetic memory device
- Patent Title (中): 具有受控各向异性磁场和磁存储器件的磁记录介质
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Application No.: US13799078Application Date: 2013-03-13
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Publication No.: US09129635B2Publication Date: 2015-09-08
- Inventor: Hiroshi Fukuda , Yoshihiro Shiroishi
- Applicant: HITACHI, LTD.
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP2012-102100 20120427
- Main IPC: G11B5/127
- IPC: G11B5/127 ; G11B5/66 ; G11B5/78 ; G11B5/00

Abstract:
There are provided a magnetic recording medium and a magnetic memory device capable of implementing high recording density, in the case of using a microwave assisted magnetic recording (MAMR) scheme. In a magnetic memory device including a magnetic recording medium having a recording film with three or more layers, a recording magnetic pole generating a recording magnetic field, an opposed magnetic pole, a high frequency magnetic field generating element generating a microwave for recording assist, and a magnetic reproduction element, an anisotropic field of a first layer which is a top layer of the recording film is larger than 20 kOe.
Public/Granted literature
- US20130286505A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC MEMORY DEVICE Public/Granted day:2013-10-31
Information query
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