Zinc enhanced hard disk media

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

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Title: Zinc enhanced hard disk media

Abstract

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.

Inventors:

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

Pittsburgh, PA

Issue Date:: Tue Jan 01 00:00:00 EST 2002

Research Org.:: Carnegie Mellon University (Pittsburgh, PA)

OSTI Identifier:: 874648

Patent Number(s):: 6432563

Application Number:: 09/541,245

Assignee:: Carnegie Mellon University (Pittsburgh, PA)

Patent Classifications (CPCs):: G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

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G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B5/00 - Recording by magnetisation or demagnetisation of a record carrier
G11B5/012 - Recording on, or reproducing or erasing from, magnetic disks
G11B5/66 - consisting of several layers

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S428/90 - Magnetic feature

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DOE Contract Number:: FG02-90ER45423

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: zinc; enhanced; hard; disk; media; provides; magnetic; recording; incorporating; zn; containing; layers; close; proximity; layer; provide; increased; coercivity; noise; incorporated; rotating; translating; stationary; operate; conjunction; transducing; heads; reading; data; applications; medium; alloy; film; underlayer; structures; promote; epitaxial; crystalline; structure; isolation; grains; seed; underlayers; intermediate; overlayers; process; manufacture; promoting; diffusion; grain; boundaries; crystalline structure; magnetic recording; recording media; magnetic layer; /428/

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                    Zou, Jie, Lambeth, David N, and Laughlin, David E. Zinc enhanced hard disk media.  United States: N. p., 2002. 
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                    Zou, Jie, Lambeth, David N, & Laughlin, David E. Zinc enhanced hard disk media.  United States.

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                    Zou, Jie, Lambeth, David N, and Laughlin, David E. Tue .  
        "Zinc enhanced hard disk media".  United States.  https://www.osti.gov/servlets/purl/874648.

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@article{osti_874648,

  title        = {Zinc enhanced hard disk media},

  author       = {Zou, Jie and Lambeth, David N and Laughlin, David E},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jan 01 00:00:00 EST 2002},

  month        = {Tue Jan 01 00:00:00 EST 2002}

}

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Works referenced in this record:

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Tani, N.; Hashimoto, M.; Murata, Y.
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Epitaxial Ag templates on Si(001) for bicrystal CoCrTa media
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Yang, Wei; Lambeth, David N.; Tang, Li
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Sputtered multilayer films for digital magnetic recording
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The Effects of Substrate Preheating and Post-Deposition Annealing on CrMn/CoCrPt/CrMn/NiAI Films
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Zou, Jie; Laughlin, David E.; Lambeth, David N.
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Sputtered Ni/sub x/P underlayer for CoPt-based thin film magnetic media
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Yamashita, T.; Chan, L. H.; Fujiwara, T.
IEEE Transactions on Magnetics, Vol. 27, Issue 6
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Electron microscopy on high-coercive-force Co-Cr composite films
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Daval, J.; Randet, D.
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RF-sputtered chromium-cobalt films for high-density longitudinal magnetic recording
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Maloney, W.
IEEE Transactions on Magnetics, Vol. 15, Issue 6
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Beta tungsten underlayer for low‐noise thin‐film longitudinal media
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Ranjan, Rajiv
Journal of Applied Physics, Vol. 67, Issue 9
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The magnetic properties of amorphous SmCo-films
journal, January 1984

Gronau, M.; Schuffler, D.; Sprenger, S.
IEEE Transactions on Magnetics, Vol. 20, Issue 1
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Epitaxial Growth of Co/Cr Bilayer Films on MgO Single Crystal Substrates
journal, October 1993

Nakamura, Atsushi; Futamoto, Masaaki
Japanese Journal of Applied Physics, Vol. 32, Issue Part 2, No. 10A
https://doi.org/10.1143/JJAP.32.L1410

Magnetic and recording properties of sputtered Co-P/Cr thin film media
journal, January 1988

Natarajan, B. R.; Murdock, E. S.
IEEE Transactions on Magnetics, Vol. 24, Issue 6
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Thin films for magnetic recording technology: A review
journal, January 1986

Howard, J. K.
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 4, Issue 1
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Low‐noise metal medium for high‐density longitudinal recording
journal, April 1988

Christner, J. A.; Ranjan, R.; Peterson, R. L.
Journal of Applied Physics, Vol. 63, Issue 8
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High‐coercivity magnetic hard disks using glass substrates
journal, May 1990

Kogure, T.; Katayama, S.; Ishii, N.
Journal of Applied Physics, Vol. 67, Issue 9
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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
journal, January 1994

Nakagawa, S.; Ichihara, T.; Naoe, M.
IEEE Transactions on Magnetics, Vol. 30, Issue 6
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Interdiffusion and grain isolation in Co/Cr thin films
journal, January 1994

Feng, Y. C.; Laughlin, D. E.; Lambeth, D. N.
IEEE Transactions on Magnetics, Vol. 30, Issue 6
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CrMn underlayers for CoCrPt thin film media
journal, July 1998

Lee, Li-Lien; Laughlin, D. E.; Lambeth, D. N.
IEEE Transactions on Magnetics, Vol. 34, Issue 4, p. 1561-1563
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Temperature dependence of magnetocrystalline anisotropy energy determined using Co-Cr-Ta single crystal thin films
journal, July 1998

Inaba, N.; Futamoto, M.; Nakamura, A.
IEEE Transactions on Magnetics, Vol. 34, Issue 4
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Measurement of the intrinsic signal‐to‐noise ratio for high‐performance rigid recording media
journal, January 1986

Belk, Nathan R.; George, Peter K.; Mowry, Greg S.
Journal of Applied Physics, Vol. 59, Issue 2
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Crystallography of Co/Cr bilayer magnetic thin films
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Journal of Applied Physics, Vol. 68, Issue 9
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Structural, magnetic and recording properties of CoCrTa/Co₃O₄/Pt perpendicular thin films media
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Song, Xing; Loven, J.; Sivertsen, J.
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Structural characteristics of bias sputtered CoCrTa/Cr films
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Development of high resolution and low noise single-layered perpendicular recording media for high density recording
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Hirayama, Y.; Futamoto, M.; Ito, K.
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Properties of CoCrTa perpendicular films prepared by sputtering on platinum underlayer with different bias conditions
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Laser texturing for low‐flying‐height media
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Ranjan, R.; Lambeth, D. N.; Tromel, M.
Journal of Applied Physics, Vol. 69, Issue 8
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Magnetic and recording characteristics of bicrystalline longitudinal recording medium formed on an MgO single crystal disk substrate
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Similar Records

Title: Zinc enhanced hard disk media

Abstract

Citation Formats

Effects of substituted elements into the Cr layer on a CoNiCr/Cr sputtered hard disk journal, June 1990

Compositional separation of (Co-Cr-Pt)/Cr films for longitudinal recording and (Co-Cr)/Ti films for perpendicular recording journal, November 1991

The crystallography and texture of Co-based thin film deposited on Cr underlayers journal, November 1991

Epitaxial Ag templates on Si(001) for bicrystal CoCrTa media journal, April 1997

Sputtered multilayer films for digital magnetic recording journal, July 1979

The Effects of Substrate Preheating and Post-Deposition Annealing on CrMn/CoCrPt/CrMn/NiAI Films journal, January 1998

Sputtered Ni/sub x/P underlayer for CoPt-based thin film magnetic media journal, November 1991

Electron microscopy on high-coercive-force Co-Cr composite films journal, December 1970

RF-sputtered chromium-cobalt films for high-density longitudinal magnetic recording journal, November 1979

Beta tungsten underlayer for low‐noise thin‐film longitudinal media journal, May 1990

The magnetic properties of amorphous SmCo-films journal, January 1984

Epitaxial Growth of Co/Cr Bilayer Films on MgO Single Crystal Substrates journal, October 1993

Magnetic and recording properties of sputtered Co-P/Cr thin film media journal, January 1988

Thin films for magnetic recording technology: A review journal, January 1986

Low‐noise metal medium for high‐density longitudinal recording journal, April 1988

High‐coercivity magnetic hard disks using glass substrates journal, May 1990

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 journal, January 1994

Interdiffusion and grain isolation in Co/Cr thin films journal, January 1994

CrMn underlayers for CoCrPt thin film media journal, July 1998

Temperature dependence of magnetocrystalline anisotropy energy determined using Co-Cr-Ta single crystal thin films journal, July 1998

Measurement of the intrinsic signal‐to‐noise ratio for high‐performance rigid recording media journal, January 1986

Crystallography of Co/Cr bilayer magnetic thin films journal, November 1990

Structural, magnetic and recording properties of CoCrTa/Co3O4/Pt perpendicular thin films media journal, January 1996

Structural characteristics of bias sputtered CoCrTa/Cr films journal, November 1993

Development of high resolution and low noise single-layered perpendicular recording media for high density recording journal, January 1997

Elements of X-Ray Crystallography . Leonid V. Azároff journal, September 1968

Properties of CoCrTa perpendicular films prepared by sputtering on platinum underlayer with different bias conditions journal, March 1996

Laser texturing for low‐flying‐height media journal, April 1991

Magnetic and recording characteristics of bicrystalline longitudinal recording medium formed on an MgO single crystal disk substrate journal, January 1994

Effects of substituted elements into the Cr layer on a CoNiCr/Cr sputtered hard disk
journal, June 1990

Compositional separation of (Co-Cr-Pt)/Cr films for longitudinal recording and (Co-Cr)/Ti films for perpendicular recording
journal, November 1991

The crystallography and texture of Co-based thin film deposited on Cr underlayers
journal, November 1991

Epitaxial Ag templates on Si(001) for bicrystal CoCrTa media
journal, April 1997

Sputtered multilayer films for digital magnetic recording
journal, July 1979

The Effects of Substrate Preheating and Post-Deposition Annealing on CrMn/CoCrPt/CrMn/NiAI Films
journal, January 1998

Sputtered Ni/sub x/P underlayer for CoPt-based thin film magnetic media
journal, November 1991

Electron microscopy on high-coercive-force Co-Cr composite films
journal, December 1970

RF-sputtered chromium-cobalt films for high-density longitudinal magnetic recording
journal, November 1979

Beta tungsten underlayer for low‐noise thin‐film longitudinal media
journal, May 1990

The magnetic properties of amorphous SmCo-films
journal, January 1984

Epitaxial Growth of Co/Cr Bilayer Films on MgO Single Crystal Substrates
journal, October 1993

Magnetic and recording properties of sputtered Co-P/Cr thin film media
journal, January 1988

Thin films for magnetic recording technology: A review
journal, January 1986

Low‐noise metal medium for high‐density longitudinal recording
journal, April 1988

High‐coercivity magnetic hard disks using glass substrates
journal, May 1990

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
journal, January 1994

Interdiffusion and grain isolation in Co/Cr thin films
journal, January 1994

CrMn underlayers for CoCrPt thin film media
journal, July 1998

Temperature dependence of magnetocrystalline anisotropy energy determined using Co-Cr-Ta single crystal thin films
journal, July 1998

Measurement of the intrinsic signal‐to‐noise ratio for high‐performance rigid recording media
journal, January 1986

Crystallography of Co/Cr bilayer magnetic thin films
journal, November 1990

Structural, magnetic and recording properties of CoCrTa/Co₃O₄/Pt perpendicular thin films media
journal, January 1996

Structural characteristics of bias sputtered CoCrTa/Cr films
journal, November 1993

Development of high resolution and low noise single-layered perpendicular recording media for high density recording
journal, January 1997

Elements of X-Ray Crystallography . Leonid V. Azároff
journal, September 1968

Properties of CoCrTa perpendicular films prepared by sputtering on platinum underlayer with different bias conditions
journal, March 1996

Laser texturing for low‐flying‐height media
journal, April 1991

Magnetic and recording characteristics of bicrystalline longitudinal recording medium formed on an MgO single crystal disk substrate
journal, January 1994