High density magnetic recording medium with high Hr and low Mrt

Details High density magnetic recording medium with high Hr and low Mrt High density magnetic recording medium with high Hr and low Mrt

1998-11-10

2000-12-05

Kiliman, Leszek

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Physical dimension specified

428336, 428694T, 428694TS, 428900, G11B 566

Patent

active

061564222

ABSTRACT:
A magnetic recording medium exhibiting high in-plane anisotropy at low Mrt is formed employing a NiAl seedlayer and a CrMn underlayer thereon. Embodiments include magnetic recording media with a CoCrPtTa magnetic alloy layer exhibiting a Hr greater than 2800 Oe with a Mrt no greater than 0.5 memu/cm.sup.2. The resulting media also exhibit high S* and low media noise.

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D. E. Laughlin, et al; IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996.
"Effects of Cr Intermediate Layers on CoCrPt Thin Film Media on NiA1 Underlayers", Li-Lien Lee et al., IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995.
"NiA1 Underlayers for CoCrTa Magnetic Thin Films", Li-Lien Lee, et al., IEEE Transactions on Magnetics, vol. 30, No. 6, Nov. 1994.
"Seed Layer Induced (002) Crystallographic Texture in NiA1 Underlayers", Li-Lien Lee et al., Journal of Applied PhysicsVol. 79, No. 8, Apr. 15, 1996.
"The Control and Characterization of the Crystallographic Texture of Longitudinal Thin Film Recording Media", David E. Laughlin, et al., IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996.
"The Role of NiA1 Underlayers in Longitudinal Recording Media (abstract)", C.A. Ross, et al., Journal of Applied Physics, vol. 81, No. 8, Apr. 15, 1997.

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