Metallic thin-film magnetic recording media

Stock material or miscellaneous articles – Composite – Of inorganic material

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Details

428694TS, 428694TP, 428900, 2041922, G11B 566

Patent

active

057890900

ABSTRACT:
A metallic thin-film magnetic recording medium which is enhanced in coercive force, diminished in nonlinear waveform interference through controlled magnetic anisotropy and adapted to a higher recording density. A seed layer of a crystalline Cr--Ni alloy is formed between the substrate of the medium and a Cr ground layer, whereby the crystal orientation of a magnetic layer is substantially (100) orientation. The crystalline alloy includes an alloy consisting essentially of 36 to 46 atomic % of Ni and the balance substantially Cr, or an alloy consisting essentially of 36 to 46 atomic % of Ni, 0.5 to 3 atomic % of W or Mo or combination thereof and the balance substantially Cr.

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"Oxidation of Seed-Layer for Improved Magnetics & Recording Performance of Thin-Film Rigid Discs ", Nader Mahvan, Eithan Ziera, Atef Eltoukhy; Nashua Computer Products, IEEE Transactions On Magnetics, vol. 29, No. 6, Nov. 1993, pp.3691 -3693.
"NiA1 Underlayers For CocrTa Magnetic Thin Films", Li-Lien Lee, David E. Laughlin, David N. Lambeth, Dept. of Elect. & Computer Eng.; Data Storage Systems Center; IEEE Transactions On Magnetics, vol. 30, No. 6, Nov. 1994 pp. 3951 -3953.
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