Ultrathin Si/C graded layer to improve tribological properties of Co magnetic films

Ehsan Rismani; M. Abdul Samad; Sujeet K. Sinha; Reuben Yeo; Hyunsoo Yang; C. Singh Bhatia

doi:10.1063/1.4765054

Ultrathin Si/C graded layer to improve tribological properties of Co magnetic films

Ehsan Rismani^*
, M. Abdul Samad
, Sujeet K. Sinha
, Reuben Yeo
, Hyunsoo Yang
, C. Singh Bhatia

^*Corresponding author for this work

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

14 Scopus citations

Abstract

An ultrathin Si layer (≤1 nm) deposited on Co magnetic films was bombarded with energetic C ⁺ ions to form a Co/Si/C mixed layer. This layer improved the tribological properties of the Co film as compared with those of a commercial hard disk media with 3.0 nm carbon overcoat and 1.4 nm of lubricant. Formation of a network of C-C and Si-C bonds at the outermost layer and the bulk of the Si/C film as well as formation of chemical bonds between the Co surface and the mixed layer was found as the main factors to improve the tribological properties.

Original language	English
Article number	191601
Journal	Applied Physics Letters
Volume	101
Issue number	19
DOIs	https://doi.org/10.1063/1.4765054
State	Published - 5 Nov 2012

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Ultrathin Si/C graded layer to improve tribological properties of Co magnetic films",

abstract = "An ultrathin Si layer (≤1 nm) deposited on Co magnetic films was bombarded with energetic C + ions to form a Co/Si/C mixed layer. This layer improved the tribological properties of the Co film as compared with those of a commercial hard disk media with 3.0 nm carbon overcoat and 1.4 nm of lubricant. Formation of a network of C-C and Si-C bonds at the outermost layer and the bulk of the Si/C film as well as formation of chemical bonds between the Co surface and the mixed layer was found as the main factors to improve the tribological properties.",

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AU - Rismani, Ehsan

AU - Samad, M. Abdul

AU - Sinha, Sujeet K.

AU - Yeo, Reuben

AU - Yang, Hyunsoo

AU - Bhatia, C. Singh

PY - 2012/11/5

Y1 - 2012/11/5

N2 - An ultrathin Si layer (≤1 nm) deposited on Co magnetic films was bombarded with energetic C + ions to form a Co/Si/C mixed layer. This layer improved the tribological properties of the Co film as compared with those of a commercial hard disk media with 3.0 nm carbon overcoat and 1.4 nm of lubricant. Formation of a network of C-C and Si-C bonds at the outermost layer and the bulk of the Si/C film as well as formation of chemical bonds between the Co surface and the mixed layer was found as the main factors to improve the tribological properties.

AB - An ultrathin Si layer (≤1 nm) deposited on Co magnetic films was bombarded with energetic C + ions to form a Co/Si/C mixed layer. This layer improved the tribological properties of the Co film as compared with those of a commercial hard disk media with 3.0 nm carbon overcoat and 1.4 nm of lubricant. Formation of a network of C-C and Si-C bonds at the outermost layer and the bulk of the Si/C film as well as formation of chemical bonds between the Co surface and the mixed layer was found as the main factors to improve the tribological properties.

UR - https://www.scopus.com/pages/publications/84869070352

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Ultrathin Si/C graded layer to improve tribological properties of Co magnetic films

Abstract

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