High coercivity magnetic recording medium comprising a thin CoCrTa intermediate layer
AssigneeSeagate Technolgy LLC
InventorsXing Song, Qixu Chen, Charles Leu, Rajiv Y. Ranjan
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Abstract
A high areal density magnetic recording medium exhibiting high remanent coercivity and high coercivity squareness is formed with a thin CoCrTa intermediate layer to provide appropriate crystalline orientation and surface morphology for nucleation and growth of a magnetic layer thereon. The present invention also enables the use of lower substrate heating temperatures during deposition. Embodiments include depositing an intermediate Co alloy layer comprising about 10 up to about 15 atomic % Cr and about 1 to about 6 atomic % Ta at a thickness of about 1.5 to about 150 .ANG..
Claims23
A magnetic recording medium comprising:
- a non-magnetic substrate;
- an intermediate layer comprising cobalt, about 10 up to about 15 atomic % chromium, and tantalum;
- and
- a magnetic layer, having a (1120)-dominant crystallographic orientation, on the intermediate layer.
A method of manufacturing a magnetic recording medium, the method comprising:
- conveying a non-magnetic substrate to a magnetic layer deposition chamber;
- and
- sequentially depositing on the substrate in the deposition chamber:
- an intermediate layer comprising cobalt, about 10 up to about 15 atomic percent chromium, and tantalum;
- and
- a magnetic layer having a (1120)-dominant crystallographic orientation.
Dependencies are inferred from the claim text.