Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1994-03-14
1996-10-29
Kiliman, Leszek
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428336, 428611, 428636, 428655, 428656, 428661, 428663, 428668, 428678, 428694TS, 428694TP, 428694TM, 428900, 2041921, G11B 566
Patent
active
055695337
ABSTRACT:
A longitudinal magnetic recording medium formed on a non-metallic substrate and a method of forming the medium is disclosed. A sublayer formed of a chromium alloy having a thickness between 3-50 .ANG. is deposited on the substrate, followed by a chromium-based underlayer. A cobalt-based magnetic recording layer is sputtered over the underlayer. The medium is characterized by improved coercivity, HF signal amplitude and signal-to-noise ratio.
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patent: 5082747 (1992-01-01), Hedgcoth
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Lal, B. B., et al., "A New Series of Quaternary Co-Alloys for High Density Rigid-Disk Applications," IEEE Trans. on Magnetics 27(6):4739 (1991).
Laughlin, D. E., and Wong, B. Y., "The Crystallography and Texture of Co-Based Thin Film Deposited on Cr Underlayers," IEEE Trans. on Magnetics 27(6):4713 (1991).
Mirzamaani, M., et al., "Orientation Ratio of Sputtered Thin-Film Disks," J. Appl. Phys. 67(9):4695 (1990).
Pressesky, J., et al., "Crystallography and Magnetic Properties of CoCrTa Films Prepared on Cr Underlayers with Different Substrate Bias Conditions," J. Appl. Phys. 69(8):5163 (1991).
Tsai, H. C., et al., "Preferred Orientation in Cr- and Co-Based Thin Films and its Effects on the Read/Write Performance of the Media," J. Appl. Phys. 71(7):3579 (1992).
Tsai, H. C., "Advantage and Challenge of Nonmetallic Substrates for Rigid Disk Applications," IEEE Trans. on Magnetics 29(1):241 (1993).
Bourez Allen J.
Lal Brij B.
Shinohara Tadashi
Dehlinger Peter J.
HMT Technology Corporation
Kiliman Leszek
Mohr Judy M.
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