Perpendicular magnetic recording medium and manufacturing method of the same

摘要

A perpendicular magnetic recording medium of the invention is characterized by having, on a disk substrate 110, a soft magnetic layer 14, a magnetic recording layer 22, a continuous layer 24 magnetically continuous in the in-plane direction of the substrate, a blocking layer 25 for blocking shock imposed on the continuous layer, and a medium protective layer 28 containing carbon formed on the blocking layer.

主权项

1. A perpendicular magnetic recording medium comprising:
a substrate; a soft magnetic layer disposed above a surface of the substrate; a magnetic recording layer disposed above the soft magnetic layer; a continuous layer which is magnetically continuous in the in-plane direction of the substrate disposed above the magnetic recording layer; a blocking layer disposed above the continuous layer and CVD (Chemical Vapour Deposition) deposited directly on the continuous layer to have a thickness of approximately 0.25 nm for blocking shock imposed on the continuous layer when carbon atoms are applied during formation of a medium protective layer; and the medium protective layer containing carbon and formed on the blocking layer, wherein the blocking layer is non-magnetic and formed only of amorphous CrTi, and wherein the medium protective layer is formed on the blocking layer while a bias voltage of 100 V to 300 V is applied to the substrate.