Tilted magnetic recording media

Details Tilted magnetic recording media Tilted magnetic recording media

2005-07-05

2008-12-23

Bernatz, Kevin M (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S831200, C360S131000, C360S135000

Reexamination Certificate

active

07468214

ABSTRACT:
A tilted magnetic recording medium comprises a layer of magnetic material having a magnetic easy axis defined by tilted alignment of a particular crystalline phase of the magnetic material. A film of (101) and (011) textured L10phase of a tetragonal crystalline magnetic material has crystalline c-axes oriented 45° to the medium surface normal. The L10crystalline magnetic alloy comprises a first element selected from the group consisting of Co and Fe, and a second element selected from the group consisting of Pt and Pd. A seedlayer comprising a bcc or B2 crystal structure with a natural texture of (110) creates interfacial stress with the magnetic layer, giving rise to a pure (101) and (011) textured L10crystalline film. A textured underlying surface facilitates preferential formation of the seedlayer and subsequent growth of the magnetic material to achieve tilted magnetic directions perpendicular to the recording tracks.

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