Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1994-01-13
1995-09-26
Resan, Stevan A.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
428212, 428216, 428611, 428637, 428668, 428678, 428693, 428694TM, 428900, 428928, G11B 500
Patent
active
054538866
ABSTRACT:
A magnetic recording medium for digital recording has a magnetic layer on a non-magnetic substrate. The magnetic layer includes a lower layer of ferromagnetic metal thin film nearer to the substrate surface and an upper layer of ferromagnetic metal thin film, each ferromagnetic metal thin film being composed of columnar grains deposited by oblique evaporation process. The average growth directions of columnar grains in the lower and upper layers intersect each other from opposite sides of a normal to the substrate surface. Digital recording is carried out by means of a magnetic head in relative motion toward or opposite to the growth direction of columnar grains in the upper layer.
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Kobayashi Koji
Takai Mitsuru
Resan Stevan A.
TDK Corporation
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