CoPtCr:C nanocomposite films for high density recording

H. Zeng; M. L. Yan; Y. Liu; D. J. Sellmyer

doi:10.1063/1.1331643

CoPtCr:C nanocomposite films for high density recording

H. Zeng
, M. L. Yan
, Y. Liu
, D. J. Sellmyer

Physics

University of Nebraska-Lincoln

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

20 Scopus citations

Abstract

We report results on the magnetic properties of nanocomposite films of the form (Co₈₆Cr₁₄)_xPt_1-x:C, which were prepared by magnetron sputtering and subsequent annealing. X-ray diffraction shows that these films consist of CoPtCr grains with the face-centered-tetragonal structure embedded in an amorphous C matrix. Magnetic properties such as coercivity (H_c), remanence ratio (S), and coercive squareness (S*) are strongly dependent on the Pt and C composition and annealing temperatures. Compared with previously reported CoPt:C films with a equiatomic Co and Pt ratio, lower exchange coupling and higher S and S* at the same C concentration were obtained. H_c values ranging from 2 to 10 kOe and S close to 1 were achieved for film thicknesses down to 10 nm. These features make CoPtCr:C nanocomposite films very attractive for next-generation high-density recording.

Original language	English
Pages (from-to)	810-812
Number of pages	3
Journal	Journal of Applied Physics
Volume	89
Issue number	1
DOIs	https://doi.org/10.1063/1.1331643
State	Published - Jan 1 2001

Access to Document

10.1063/1.1331643

Cite this

@article{0ea0d549641a4e28a8fa62d384aac409,

title = "CoPtCr:C nanocomposite films for high density recording",

abstract = "We report results on the magnetic properties of nanocomposite films of the form (Co86Cr14)xPt1-x:C, which were prepared by magnetron sputtering and subsequent annealing. X-ray diffraction shows that these films consist of CoPtCr grains with the face-centered-tetragonal structure embedded in an amorphous C matrix. Magnetic properties such as coercivity (Hc), remanence ratio (S), and coercive squareness (S*) are strongly dependent on the Pt and C composition and annealing temperatures. Compared with previously reported CoPt:C films with a equiatomic Co and Pt ratio, lower exchange coupling and higher S and S* at the same C concentration were obtained. Hc values ranging from 2 to 10 kOe and S close to 1 were achieved for film thicknesses down to 10 nm. These features make CoPtCr:C nanocomposite films very attractive for next-generation high-density recording.",

author = "H. Zeng and Yan, \{M. L.\} and Y. Liu and Sellmyer, \{D. J.\}",

year = "2001",

month = jan,

day = "1",

doi = "10.1063/1.1331643",

language = "English",

volume = "89",

pages = "810--812",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "1",

}

TY - JOUR

T1 - CoPtCr:C nanocomposite films for high density recording

AU - Zeng, H.

AU - Yan, M. L.

AU - Liu, Y.

AU - Sellmyer, D. J.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We report results on the magnetic properties of nanocomposite films of the form (Co86Cr14)xPt1-x:C, which were prepared by magnetron sputtering and subsequent annealing. X-ray diffraction shows that these films consist of CoPtCr grains with the face-centered-tetragonal structure embedded in an amorphous C matrix. Magnetic properties such as coercivity (Hc), remanence ratio (S), and coercive squareness (S*) are strongly dependent on the Pt and C composition and annealing temperatures. Compared with previously reported CoPt:C films with a equiatomic Co and Pt ratio, lower exchange coupling and higher S and S* at the same C concentration were obtained. Hc values ranging from 2 to 10 kOe and S close to 1 were achieved for film thicknesses down to 10 nm. These features make CoPtCr:C nanocomposite films very attractive for next-generation high-density recording.

AB - We report results on the magnetic properties of nanocomposite films of the form (Co86Cr14)xPt1-x:C, which were prepared by magnetron sputtering and subsequent annealing. X-ray diffraction shows that these films consist of CoPtCr grains with the face-centered-tetragonal structure embedded in an amorphous C matrix. Magnetic properties such as coercivity (Hc), remanence ratio (S), and coercive squareness (S*) are strongly dependent on the Pt and C composition and annealing temperatures. Compared with previously reported CoPt:C films with a equiatomic Co and Pt ratio, lower exchange coupling and higher S and S* at the same C concentration were obtained. Hc values ranging from 2 to 10 kOe and S close to 1 were achieved for film thicknesses down to 10 nm. These features make CoPtCr:C nanocomposite films very attractive for next-generation high-density recording.

UR - https://www.scopus.com/pages/publications/0000094296

U2 - 10.1063/1.1331643

DO - 10.1063/1.1331643

M3 - Article

AN - SCOPUS:0000094296

SN - 0021-8979

VL - 89

SP - 810

EP - 812

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

ER -

CoPtCr:C nanocomposite films for high density recording

Abstract

Access to Document

Other files and links

Fingerprint

Cite this