Magnetic recording medium and magnetic recording device

Details Magnetic recording medium and magnetic recording device Magnetic recording medium and magnetic recording device

2006-03-14

2009-11-03

Bernatz, Kevin M. (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S829000, C428S831200, C428S836100

Reexamination Certificate

active

07611783

ABSTRACT:
A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk1and an inclination of a reversal part of a magnetization curve of a1. The writing assist layer has an anisotropic magnetic field of Hk2and an inclination of a reversal part of a magnetization curve of a2. The anisotropic magnetic fields Hk1and Hk2and the inclinations a1and a2satisfy Hk1>Hk2and a2>a1.

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