Zinc enhanced hard disk media

Zou, Jie; Lambeth, David N; Laughlin, David E

Zinc enhanced hard disk media

Patent · Mon Dec 31 23:00:00 EST 2001

OSTI ID:874648

Zou, Jie ^[1]; Lambeth, David N ^[1]; Laughlin, David E ^[1]

Pittsburgh, PA

The present invention provides a magnetic recording media incorporating Zn containing layers in close proximity to a magnetic layer to provide media having increased coercivity and lower noise. The Zn containing layer can be incorporated in a rotating, translating or stationary recording media to operate in conjunction with magnetic transducing heads for recording and reading of magnetic data, as well as other applications. The magnetic recording medium of the invention preferably includes a Co or Co alloy film magnetic layer, underlayer structures to promote epitaxial crystalline structure in the magnetic layer, and a Zn containing layer to promote isolation between the magnetic grains. The medium can further include seed layers, underlayers, intermediate layers, and overlayers. The process of manufacture includes promoting diffusion of Zn to the magnetic layer grain boundaries.

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Research Organization:: Carnegie Mellon University (Pittsburgh, PA)

DOE Contract Number:: FG02-90ER45423

Assignee:: Carnegie Mellon University (Pittsburgh, PA)

Patent Number(s):: US 6432563

Application Number:: 09/541,245

OSTI ID:: 874648

Country of Publication:: United States

Language:: English

References (29)

Crystallography of Co/Cr bilayer magnetic thin films Hono, K.; Wong, B.; Laughlin, D. E. Journal of Applied Physics, Vol. 68, Issue 9 https://doi.org/10.1063/1.346155	journal	November 1990
The Effects of Substrate Preheating and Post-Deposition Annealing on CrMn/CoCrPt/CrMn/NiAI Films Zou, Jie; Laughlin, David E.; Lambeth, David N. MRS Proceedings, Vol. 517 https://doi.org/10.1557/PROC-517-217	journal	January 1998
Structural characteristics of bias sputtered CoCrTa/Cr films Deng, Y.; Lambeth, D. N.; Laughlin, D. E. IEEE Transactions on Magnetics, Vol. 29, Issue 6 https://doi.org/10.1109/20.281266	journal	November 1993
Beta tungsten underlayer for low‐noise thin‐film longitudinal media Ranjan, Rajiv Journal of Applied Physics, Vol. 67, Issue 9 https://doi.org/10.1063/1.344805	journal	May 1990
The crystallography and texture of Co-based thin film deposited on Cr underlayers Laughlin, D. E.; Wong, B. Y. IEEE Transactions on Magnetics, Vol. 27, Issue 6 https://doi.org/10.1109/20.278924	journal	November 1991
RF-sputtered chromium-cobalt films for high-density longitudinal magnetic recording Maloney, W. IEEE Transactions on Magnetics, Vol. 15, Issue 6 https://doi.org/10.1109/TMAG.1979.1060389	journal	November 1979
Elements of X-Ray Crystallography . Leonid V. Azároff Moore, Paul The Journal of Geology, Vol. 76, Issue 5 https://doi.org/10.1086/627385	journal	September 1968
Effects of substituted elements into the Cr layer on a CoNiCr/Cr sputtered hard disk Tani, N.; Hashimoto, M.; Murata, Y. Journal of Applied Physics, Vol. 67, Issue 12 https://doi.org/10.1063/1.345810	journal	June 1990
Development of high resolution and low noise single-layered perpendicular recording media for high density recording Hirayama, Y.; Futamoto, M.; Ito, K. IEEE Transactions on Magnetics, Vol. 33, Issue 1 https://doi.org/10.1109/20.560145	journal	January 1997
CrMn underlayers for CoCrPt thin film media Lee, Li-Lien; Laughlin, D. E.; Lambeth, D. N. IEEE Transactions on Magnetics, Vol. 34, Issue 4, p. 1561-1563 https://doi.org/10.1109/20.706615	journal	July 1998
Sputtered Ni/sub x/P underlayer for CoPt-based thin film magnetic media Yamashita, T.; Chan, L. H.; Fujiwara, T. IEEE Transactions on Magnetics, Vol. 27, Issue 6 https://doi.org/10.1109/20.278928	journal	November 1991
Measurement of the intrinsic signal‐to‐noise ratio for high‐performance rigid recording media Belk, Nathan R.; George, Peter K.; Mowry, Greg S. Journal of Applied Physics, Vol. 59, Issue 2 https://doi.org/10.1063/1.336613	journal	January 1986
Temperature dependence of magnetocrystalline anisotropy energy determined using Co-Cr-Ta single crystal thin films Inaba, N.; Futamoto, M.; Nakamura, A. IEEE Transactions on Magnetics, Vol. 34, Issue 4 https://doi.org/10.1109/20.706614	journal	July 1998
Soft magnetic and crystallographic properties of Ni/sub 81/Fe/sub 19//Co/sub 67/Cr/sub 33/ multilayers as backlayers in perpendicular recording media Nakagawa, S.; Ichihara, T.; Naoe, M. IEEE Transactions on Magnetics, Vol. 30, Issue 6 https://doi.org/10.1109/20.333976	journal	January 1994
Properties of CoCrTa perpendicular films prepared by sputtering on platinum underlayer with different bias conditions Chandrasekhar, R.; Mapps, D. J. Journal of Magnetism and Magnetic Materials, Vol. 155, Issue 1-3 https://doi.org/10.1016/0304-8853(95)00686-9	journal	March 1996
High‐coercivity magnetic hard disks using glass substrates Kogure, T.; Katayama, S.; Ishii, N. Journal of Applied Physics, Vol. 67, Issue 9 https://doi.org/10.1063/1.346070	journal	May 1990
Magnetic and recording properties of sputtered Co-P/Cr thin film media Natarajan, B. R.; Murdock, E. S. IEEE Transactions on Magnetics, Vol. 24, Issue 6 https://doi.org/10.1109/20.92225	journal	January 1988
Thin films for magnetic recording technology: A review Howard, J. K. Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 4, Issue 1 https://doi.org/10.1116/1.573492	journal	January 1986
Low‐noise metal medium for high‐density longitudinal recording Christner, J. A.; Ranjan, R.; Peterson, R. L. Journal of Applied Physics, Vol. 63, Issue 8 https://doi.org/10.1063/1.340805	journal	April 1988
Sputtered multilayer films for digital magnetic recording Maloney, W. IEEE Transactions on Magnetics, Vol. 15, Issue 4 https://doi.org/10.1109/TMAG.1979.1145872	journal	July 1979
The magnetic properties of amorphous SmCo-films Gronau, M.; Schuffler, D.; Sprenger, S. IEEE Transactions on Magnetics, Vol. 20, Issue 1 https://doi.org/10.1109/TMAG.1984.1063035	journal	January 1984
Interdiffusion and grain isolation in Co/Cr thin films Feng, Y. C.; Laughlin, D. E.; Lambeth, D. N. IEEE Transactions on Magnetics, Vol. 30, Issue 6 https://doi.org/10.1109/20.333953	journal	January 1994
Epitaxial Growth of Co/Cr Bilayer Films on MgO Single Crystal Substrates Nakamura, Atsushi; Futamoto, Masaaki Japanese Journal of Applied Physics, Vol. 32, Issue Part 2, No. 10A https://doi.org/10.1143/JJAP.32.L1410	journal	October 1993
Laser texturing for low‐flying‐height media Ranjan, R.; Lambeth, D. N.; Tromel, M. Journal of Applied Physics, Vol. 69, Issue 8 https://doi.org/10.1063/1.347908	journal	April 1991
Epitaxial Ag templates on Si(001) for bicrystal CoCrTa media Yang, Wei; Lambeth, David N.; Tang, Li Journal of Applied Physics, Vol. 81, Issue 8 https://doi.org/10.1063/1.364826	journal	April 1997
Electron microscopy on high-coercive-force Co-Cr composite films Daval, J.; Randet, D. IEEE Transactions on Magnetics, Vol. 6, Issue 4 https://doi.org/10.1109/TMAG.1970.1066979	journal	December 1970
Compositional separation of (Co-Cr-Pt)/Cr films for longitudinal recording and (Co-Cr)/Ti films for perpendicular recording Suzuki, H.; Goda, N.; Nagaike, S. IEEE Transactions on Magnetics, Vol. 27, Issue 6 https://doi.org/10.1109/20.278925	journal	November 1991
Magnetic and recording characteristics of bicrystalline longitudinal recording medium formed on an MgO single crystal disk substrate Futamoto, M.; Suzuki, M.; Inaba, N. IEEE Transactions on Magnetics, Vol. 30, Issue 6 https://doi.org/10.1109/20.333962	journal	January 1994
Structural, magnetic and recording properties of CoCrTa/Co₃O₄/Pt perpendicular thin films media Song, Xing; Loven, J.; Sivertsen, J. IEEE Transactions on Magnetics, Vol. 32, Issue 5, p. 3840-3842 https://doi.org/10.1109/20.539190	journal	January 1996

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