Invention Grant
US08634163B2 Dual reverse microwave assisted magnetic recording (MAMR) and systems thereof
有权
双反向微波辅助磁记录(MAMR)及其系统
- Patent Title: Dual reverse microwave assisted magnetic recording (MAMR) and systems thereof
- Patent Title (中): 双反向微波辅助磁记录(MAMR)及其系统
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Application No.: US13191563Application Date: 2011-07-27
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Publication No.: US08634163B2Publication Date: 2014-01-21
- Inventor: Hiroyasu Tanabe , Masafumi Mochizuki
- Applicant: Hiroyasu Tanabe , Masafumi Mochizuki
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
In one embodiment, a magnetic head includes a main magnetic pole, a first MAMR element positioned above and wider than the main magnetic pole that is positioned to extend beyond sides of the main magnetic pole in a track width direction, a spin-rectifying-current-pinned-magnetic layer, a magnetic interlayer, a FGL, a magnetic-zone-control layer, and a second MAMR element that is wider than the main magnetic pole and is positioned to extend beyond sides of the main magnetic pole in the track width direction positioned above the first MAMR element, and a trailing shield positioned above the second MAMR element, wherein the main magnetic pole is adapted for producing a high-frequency magnetic field comprising oscillating microwaves, wherein during a writing operation, current is applied to the first and second MAMR elements to produce magnetic fields which oppose bit-switching in the magnetic medium to avoid adjacent track bit reversal.
Public/Granted literature
- US20130027803A1 DUAL REVERSE MICROWAVE ASSISTED MAGNETIC RECORDING (MAMR) AND SYSTEMS THEREOF Public/Granted day:2013-01-31
Information query
IPC分类: