Magnetic recording medium and magnetic recording apparatus

Details Magnetic recording medium and magnetic recording apparatus Magnetic recording medium and magnetic recording apparatus

2005-03-09

2009-11-24

Tarazano, D. Lawrence (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

Reexamination Certificate

active

07622204

ABSTRACT:
A large grain diameter under-layer of at least one selected from Cu, Ni or Rh, comprising large average diameter crystalline grains of 50 nm or more than 50 nm with the (100) crystal plane of the grains oriented parallel to the substrate surface, was formed on a substrate. Then, a magnetic recording layer was deposited on the under-layer. The magnetic recording medium carrying this structure showed very small magnetic crystalline grains in magnetic layer, and excellent overwrite characteristics and signal to noise ratio at high recording density.

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Japanese Office Action dated Dec. 25, 2009 for Appln. No. 2004-090672.

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