Perpendicular magnetic recording medium and the method for prepa

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2041922, 20419216, 427 34, 427132, 428408, 428694, 428900, G11B 2300

Patent

active

049943219

ABSTRACT:
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the magnetic layer is surface treated by a plasma treatment or by applying an oxide layer or a nitride layer thereon and thirdly, the protective layer is applied thereto.

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