Invention Grant
- Patent Title: Near-field thermally assisted magnetic recording head and recording apparatus thereof
- Patent Title (中): 近场热辅助磁记录头及其记录装置
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Application No.: US12448262Application Date: 2007-12-10
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Publication No.: US08284636B2Publication Date: 2012-10-09
- Inventor: Manabu Oumi , Masakazu Hirata , Majung Park
- Applicant: Manabu Oumi , Masakazu Hirata , Majung Park
- Applicant Address: JP
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP
- Agency: Adams & Wilks
- Priority: JP2006-339601 20061218
- International Application: PCT/JP2007/073808 WO 20071210
- International Announcement: WO2008/075582 WO 20080626
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
A recording head has a conical tip disposed at a distal end thereof configured to oppose a surface of a medium. The conical tip has an opening for generating near-field light and a side surface forming at least a part of an edge portion of the conical tip surrounding the opening. A magnetic recording element generates magnetization inversion in a minute area on the surface of the medium which is heated by application of the near-field light. The magnetic recording element has a main magnetic pole, a secondary magnetic pole, and a dielectric film arranged between the main and secondary magnetic poles. The main magnetic pole comprises a thin film arranged on side surface of the conical tip for providing a magnetic field to the surface of the medium in a substantially vertical direction. The secondary magnetic pole is arranged on a surface of the conical tip opposite to the side surface thereof for absorbing a part of the magnetic field provided from the main magnetic pole.
Public/Granted literature
- US20100002550A1 NEAR FIELD LIGHT ASSIGNED MAGNETIC RECORDING HEAD AND RECORDING APPARATUS USING THE SAME Public/Granted day:2010-01-07
Information query
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