High coercivity magnetic recording medium comprising a thin CoCr

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428336, 428694TS, 428694TM, 428694ST, 428900, 427128, 427129, 427130, 2041922, G11B 566

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06150016&

ABSTRACT:
A high areal density magnetic recording medium exhibiting high remanent coercivity and high coercivity squareness is formed with a thin CoCrTa intermediate layer to provide appropriate crystalline orientation and surface morphology for nucleation and growth of a magnetic layer thereon. The present invention also enables the use of lower substrate heating temperatures during deposition. Embodiments include depositing an intermediate Co alloy layer comprising about 10 up to about 15 atomic % Cr and about 1 to about 6 atomic % Ta at a thickness of about 1.5 to about 150 .ANG..

REFERENCES:
patent: 5580667 (1996-12-01), Lal
patent: 5922442 (1999-07-01), Lal
patent: 5922456 (1999-07-01), Tanahashi
patent: 5952097 (1999-09-01), Zhang
patent: 5968679 (1999-10-01), Kobayashi
patent: 6022609 (2000-02-01), Gao
D. E. Laughlin et al, "The Control and Characterization," IEEE Transaction on Magnetics, vol. 32, No. 5, Sep., 1996, pp. 3632-3637.
"NiAl Underlayers for CoCrTa Magnetic Thin Films", L. Lee, et al., IEEE Transactions on Magnetics, vol. 30, No. 6, Nov. 1994, pp. 3951-3953.
"Effects of Cr Intermediate Layers on CoCrPt Thin Film Media on NiAl Underlayers", L. Lee, et al., IEEE Transactions on Magnetics, vol. 312, No. 6, Nov. 1995, pp. 2728-2730.
"Seed Layer Induced (002) Crystallographic Texture in NiAl Underlayers", L. Lee, et al., J. Appl. Phys., 79(8), Apr. 15, 1996, pp. 4902-4904.
"The Control and Characterization of the Crystallographic Texture of Longitudinal Thin Film Recording Media", D. Laughlin, et al., IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996, pp. 3632-3637.
"The Role of NiAl Underlayers in Longitudinal Recording Media" (abstract), C. Ross, et al., Journal of Applied Physics, vol. 81, No. 8, Apr. 15, 1997, p. 4369.

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