Nanocomposite CoPt:C films for extremely high-density recording

M. Yu; Y. Liu; A. Moser; D. Weller; D. J. Sellmyer

doi:10.1063/1.125516

Nanocomposite CoPt:C films for extremely high-density recording

M. Yu, Y. Liu, A. Moser, D. Weller, D. J. Sellmyer

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

153 Scopus citations

Abstract

Nanocomposite CoPt:C films were investigated as potential media for extremely high-density recording. An annealing temperature of over 600°C is necessary to form nanocomposite CoPt:C films consisting of C matrix and fct CoPt nanocrystallites with grain sizes of 8-20 nm and coercivities of 3-12 kOe. Coercivity and grain size increase with increasing annealing temperature and decreasing C concentration and they are insensitive to film thickness. The average activation volumes are about 0.9×10^-18cm³. The properties of these nanocomposite CoPt:C films can be tailored to satisfy the thermal stability, coercivity, and media noise requirements for extremely high-density recording.

Original language	English (US)
Pages (from-to)	3992-3994
Number of pages	3
Journal	Applied Physics Letters
Volume	75
Issue number	25
DOIs	https://doi.org/10.1063/1.125516
State	Published - Dec 20 1999

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.125516

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abstract = "Nanocomposite CoPt:C films were investigated as potential media for extremely high-density recording. An annealing temperature of over 600°C is necessary to form nanocomposite CoPt:C films consisting of C matrix and fct CoPt nanocrystallites with grain sizes of 8-20 nm and coercivities of 3-12 kOe. Coercivity and grain size increase with increasing annealing temperature and decreasing C concentration and they are insensitive to film thickness. The average activation volumes are about 0.9×10-18cm3. The properties of these nanocomposite CoPt:C films can be tailored to satisfy the thermal stability, coercivity, and media noise requirements for extremely high-density recording.",

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N2 - Nanocomposite CoPt:C films were investigated as potential media for extremely high-density recording. An annealing temperature of over 600°C is necessary to form nanocomposite CoPt:C films consisting of C matrix and fct CoPt nanocrystallites with grain sizes of 8-20 nm and coercivities of 3-12 kOe. Coercivity and grain size increase with increasing annealing temperature and decreasing C concentration and they are insensitive to film thickness. The average activation volumes are about 0.9×10-18cm3. The properties of these nanocomposite CoPt:C films can be tailored to satisfy the thermal stability, coercivity, and media noise requirements for extremely high-density recording.

AB - Nanocomposite CoPt:C films were investigated as potential media for extremely high-density recording. An annealing temperature of over 600°C is necessary to form nanocomposite CoPt:C films consisting of C matrix and fct CoPt nanocrystallites with grain sizes of 8-20 nm and coercivities of 3-12 kOe. Coercivity and grain size increase with increasing annealing temperature and decreasing C concentration and they are insensitive to film thickness. The average activation volumes are about 0.9×10-18cm3. The properties of these nanocomposite CoPt:C films can be tailored to satisfy the thermal stability, coercivity, and media noise requirements for extremely high-density recording.

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Nanocomposite CoPt:C films for extremely high-density recording

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