Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1988-03-23
1990-07-03
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428668, 428694, 428928, G11B 564
Patent
active
049390457
ABSTRACT:
Disclosed are a magnetic recording medium having a magnetic recording layer formed of a magnetic thin film in which rotational hysteresis integral R.sub.H is within a range of from 0.4 to 1.3 in the measurement by a torque magnetometer, and a continuous magnetic recording medium in which crystal grains are substantially randomly arranged on the upper surface of a magnetic recording layer or on the surface of a non-magnetic subbing layer, and in which each of the crystal grains is made to be in the form of an ellipsoid or needle and to have a length-ways axial ratio of a major axis to a minor axis not smaller than 2, more preferably, not smaller than 4.
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J. C. Lodder et al., "R. F.-Sputtered Co-Cr Layers for Perpendicular Magnetic Recording", Thin Solid Films, 101 (1983), 61-73.
Hishiyama Sadao
Kitazaki Yasushi
Kuroda Katsuhiro
Matsuda Yoshibumi
Nagaike Sadanori
Hitachi , Ltd.
Zimmerman John J.
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