Magnetic recording media for longitudinal recording

Details Magnetic recording media for longitudinal recording Magnetic recording media for longitudinal recording

1988-01-28

1988-12-20

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

427131, 427132, 428611, 428663, 428665, 428667, 428678, 428694, 428900, 428928, H01F 1000

Patent

active

047924977

ABSTRACT:
Disclosed is a magnetic recording medium of the magnetic metal thin-film type for longitudinal recording, in which the noise is reduced by selecting the value of maximum torque L (the product of magnetic anisotropy energy Ku and magnetic layer volume v; as measured by setting the axis of rotation in plane of the medium) and the value of magnetic flux .phi. (the product of saturation magnetization Ms and magnetic layer volume v) from a range defined by 0<L/(2.pi..multidot..phi..sup.2)<4.times.10.sup.5 (erg/emu.sup.2).

REFERENCES:
patent: 4552820 (1985-11-01), Lin et al.
patent: 4567116 (1986-01-01), Sawada et al.
patent: 4713279 (1987-12-01), Fujiwara et al.

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