Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co60Cr40 intermediate layer

Shin Saito; Fumikazu Hoshi; Migaku Takahashi

doi:10.1109/INTMAG.2002.1001315

Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer

Shin Saito, Fumikazu Hoshi, Migaku Takahashi

ENG - Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

For CoCr based perpendicular media, many trials have been reported to reduce the initial growth region in magnetic layer by using epitaxial growth technique with a Cr-rich CoCr intermediate layer. Recently it has been reported that CoCr intermediate layer with very thin carbon layer with a thickness less than 1 nm is significantly effective to improve perpendicular magnetic properties for CoCr-based perpendicular recording media. However, the role of very thin carbon layer for the microstructure of the film has not been clarified yet. In this paper, we present the mechanism of film growth of CoCr intermediate layer and CoCrPtB magnetic layer by analyzing the thickness dependence of in-plane XRD profiles and the perpendicular magnetic anisotropy. The media used in the analysis was Co₆₉Cr₁₉Pt₈B₄/Co₆₀Cr₄₀/C(1nm)/Ti(25nm) media (d_mag=30nm, H_c=3.5kOe, and S=0.89), compared with the media without C layer.

Original language	English
Title of host publication	INTERMAG Europe 2002 - IEEE International Magnetics Conference
Editors	J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	0780373650, 9780780373655
DOIs	https://doi.org/10.1109/INTMAG.2002.1001315
Publication status	Published - 2002 Jan 1
Event	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2

Publication series

Name	INTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
Country/Territory	Netherlands
City	Amsterdam
Period	02/4/28 → 02/5/2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering
Surfaces, Coatings and Films

Access to Document

10.1109/INTMAG.2002.1001315

Cite this

Saito, S., Hoshi, F., & Takahashi, M. (2002). Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer. In J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, J. De Boeck, & R. Wood (Eds.), INTERMAG Europe 2002 - IEEE International Magnetics Conference [1001315] (INTERMAG Europe 2002 - IEEE International Magnetics Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1001315

Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer. / Saito, Shin; Hoshi, Fumikazu; Takahashi, Migaku.

INTERMAG Europe 2002 - IEEE International Magnetics Conference. ed. / J. Fidler; B. Hillebrands; C. Ross; D. Weller; L. Folks; E. Hill; M. Vazquez Villalabeitia; J. A. Bain; Jo De Boeck; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. 1001315 (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Saito, S, Hoshi, F & Takahashi, M 2002, Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer. in J Fidler, B Hillebrands, C Ross, D Weller, L Folks, E Hill, M Vazquez Villalabeitia, JA Bain, J De Boeck & R Wood (eds), INTERMAG Europe 2002 - IEEE International Magnetics Conference., 1001315, INTERMAG Europe 2002 - IEEE International Magnetics Conference, Institute of Electrical and Electronics Engineers Inc., 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002, Amsterdam, Netherlands, 02/4/28. https://doi.org/10.1109/INTMAG.2002.1001315

Saito S, Hoshi F, Takahashi M. Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer. In Fidler J, Hillebrands B, Ross C, Weller D, Folks L, Hill E, Vazquez Villalabeitia M, Bain JA, De Boeck J, Wood R, editors, INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc. 2002. 1001315. (INTERMAG Europe 2002 - IEEE International Magnetics Conference). https://doi.org/10.1109/INTMAG.2002.1001315

Saito, Shin ; Hoshi, Fumikazu ; Takahashi, Migaku. / Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co₆₀Cr₄₀ intermediate layer. INTERMAG Europe 2002 - IEEE International Magnetics Conference. editor / J. Fidler ; B. Hillebrands ; C. Ross ; D. Weller ; L. Folks ; E. Hill ; M. Vazquez Villalabeitia ; J. A. Bain ; Jo De Boeck ; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

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title = "Effects of very thin carbon layer on formation of hcp phase for CoCrPtB perpendicular media with Co60Cr40 intermediate layer",

abstract = "For CoCr based perpendicular media, many trials have been reported to reduce the initial growth region in magnetic layer by using epitaxial growth technique with a Cr-rich CoCr intermediate layer. Recently it has been reported that CoCr intermediate layer with very thin carbon layer with a thickness less than 1 nm is significantly effective to improve perpendicular magnetic properties for CoCr-based perpendicular recording media. However, the role of very thin carbon layer for the microstructure of the film has not been clarified yet. In this paper, we present the mechanism of film growth of CoCr intermediate layer and CoCrPtB magnetic layer by analyzing the thickness dependence of in-plane XRD profiles and the perpendicular magnetic anisotropy. The media used in the analysis was Co69Cr19Pt8B4/Co60Cr40/C(1nm)/Ti(25nm) media (dmag=30nm, Hc=3.5kOe, and S=0.89), compared with the media without C layer.",

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N2 - For CoCr based perpendicular media, many trials have been reported to reduce the initial growth region in magnetic layer by using epitaxial growth technique with a Cr-rich CoCr intermediate layer. Recently it has been reported that CoCr intermediate layer with very thin carbon layer with a thickness less than 1 nm is significantly effective to improve perpendicular magnetic properties for CoCr-based perpendicular recording media. However, the role of very thin carbon layer for the microstructure of the film has not been clarified yet. In this paper, we present the mechanism of film growth of CoCr intermediate layer and CoCrPtB magnetic layer by analyzing the thickness dependence of in-plane XRD profiles and the perpendicular magnetic anisotropy. The media used in the analysis was Co69Cr19Pt8B4/Co60Cr40/C(1nm)/Ti(25nm) media (dmag=30nm, Hc=3.5kOe, and S=0.89), compared with the media without C layer.

AB - For CoCr based perpendicular media, many trials have been reported to reduce the initial growth region in magnetic layer by using epitaxial growth technique with a Cr-rich CoCr intermediate layer. Recently it has been reported that CoCr intermediate layer with very thin carbon layer with a thickness less than 1 nm is significantly effective to improve perpendicular magnetic properties for CoCr-based perpendicular recording media. However, the role of very thin carbon layer for the microstructure of the film has not been clarified yet. In this paper, we present the mechanism of film growth of CoCr intermediate layer and CoCrPtB magnetic layer by analyzing the thickness dependence of in-plane XRD profiles and the perpendicular magnetic anisotropy. The media used in the analysis was Co69Cr19Pt8B4/Co60Cr40/C(1nm)/Ti(25nm) media (dmag=30nm, Hc=3.5kOe, and S=0.89), compared with the media without C layer.

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