Magnetic recording medium with a MgO sputter deposited seed layer
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United States of America Patent
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Sep 1, 1998
Issued Date -
N/A
app pub date -
Nov 6, 1995
filing date -
Sep 29, 1994
priority date (Note) -
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Abstract
The present invention provides a longitudinal magnetic recording media having a substrate, a sputter deposited MgO seed layer, a Co or Co alloy based magnetic layer and an underlayer disposed between the seed layer and the magnetic layer comprised of Cr, a Cr alloy or a material having a B2 ordered crystalline structure, preferably NiAl or FeAl. A thin Cr or Cr alloy intermediate layer of about 1.0 nm to 5.0 nm thick may be positioned between the underlayer and the magnetic layer.
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