Magnetic recording head including background magnetic field...

Details Magnetic recording head including background magnetic field... Magnetic recording head including background magnetic field...

2005-04-05

2005-04-05

Tupper, Robert S. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

C360S123090

Reexamination Certificate

active

06876519

ABSTRACT:
A perpendicular recording head (10) for use with magnetic recording media (30) includes a main pole (14) and a magnetic field source which is positioned sufficiently close to the main pole tip to generate a background magnetic field in the recording media. A conductive magnetizing coil (20) surrounding the main pole is preferably used as the magnetic field source. The background magnetic field generated by the magnetizing coil effectively reduces the coercivity of the magnetic recording media in the region affected by the background field. The recording head enables writing on high coercivity/high anisotropy magnetic media, thereby achieving extremely high recording densities.

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Khizroev et al., U.S. Utility Patent Application Serial No. 09/757,433 Entitled “Perpendicular Magnetic Recording Head With Write Pole Which Reduces Flux Antenna Effect” Filed Jan. 10, 2001.

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