Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1997-12-23

1999-10-12

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428328, 428694BA, 428694BS, 428900, G11B 5706

Patent

active

059652489

ABSTRACT:
A magnetic recording medium having excellent electromagnetic characteristics in the medium and high frequency regions has a magnetic layer formed on a non-magnetic support or a non-magnetic under layer, said magnetic layer comprising a magnetic metal powder containing iron (Fe) as a main component, 18 to 40% by weight of Co based on iron, Al and Y or a rare earth element, and having a specific surface area (x) by the BET method not exceeding 60 m.sup.2 /g, in which said magnetic metal powder has a saturation magnetization (.sigma.s) (y) and a specific surface area (x) by the BET method within the range bounded by the following four equations:

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patent: 5714275 (1998-02-01), Yamazaki et al.
patent: 5770302 (1998-06-01), Masaki et al.
patent: 5795642 (1998-08-01), Ishikawa et al.
patent: 5795645 (1998-08-01), Takahashi et al.

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