Substantially isotropic magnetic recording medium comprising a s

Details Substantially isotropic magnetic recording medium comprising a s Substantially isotropic magnetic recording medium comprising a s

1998-09-02

2000-11-14

Kiliman, Leszek

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428336, 428694T, 428694TS, 428394TP, 428900, 427128, 427129, 427130, 427131, G11B 566

Patent

active

061467545

ABSTRACT:
A high areal density magnetic recording medium exhibiting high Hc, high SNR, high S* and substantially isotropic magnetic properties is achieved by depositing a thin seedlayer before depositing the underlayer. Embodiments include heating the seedlayer under vacuum in the presence of residual oxygen to induce appropriate crystalline orientation and surface morphology for nucleation and growth of the underlayer and magnetic layer having substantially isotropic magnetic properties.

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Lee, Li-Lien et al., "FeAl underlayers for CoCrPt thin film longitudinal media", 41.sup.st Annual Conference on Magnetism & Magnetic Materials, Nov. 1996, pp. 1-8.
Laughlin, David E. et al., "The Control and Characterization of the Crystallographic Texture of Longitudinal Thin Film Recording Media", IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996, pp. 3632-3637.
Lee, Li-Lien et al., "Seed layer induced (002) crystallographic texture in NiAl underlayers", J. Appl. Phys. vol. 79, No. 8, Apr. 15, 1996, pp. 4902-4904.
Lee, Li-Lien et al., "Effects of Cr Intermediate Layers on CoCrPt Thin Film Media on NiAl Underlayers", IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995, pp. 2728-2730.
Lee, Li-Lien et al., "NiAl Underlayers For CoCrTa Magnetic Thin Films", IEEE Transactions on Magnetics, vol. 30, No. 6, Nov. 1994, pp. 3951-3953.

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