Co3Pt Nanocomposite Films for Perpendicular Magnetic Recording Media

Abstract:

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The Co3Pt magnetic layer with thickness of 7~28 nm was deposited onto the Pt underlayer. The as-deposited Co3Pt/Pt double-layered films with or without a 5 nm Pt capped layer were annealed at temperatures between 275 and 375 °C in vacuum of 1 mTorr. The influences of process parameters on perpendicular magnetic properties of Co3Pt thin films were investigated. The Co3Pt film with perpendicular coercivity (Hc⊥) value of 3620 Oe and the perpendicular squareness (S⊥) of 0.7 could be achieved from the Co3Pt(18 nm)/Pt(100 nm) double-layered films by annealing at 300°C. Further added Tb30Co70 film on the Co3Pt/Pt double-layered film could greatly enhance the perpendicular magnetic properties of the film. The Hc⊥ and S⊥ of the Tb30Co70/Co3Pt/Pt film were as high as 6560 Oe and 0.88, respectively, which has significant potential to be applied in perpendicular magnetic recording media.

Info:

Periodical:

Advanced Materials Research (Volumes 123-125)

Edited by:

Joong Hee Lee

Pages:

27-30

DOI:

10.4028/www.scientific.net/AMR.123-125.27

Citation:

C. L. Shen et al., "Co3Pt Nanocomposite Films for Perpendicular Magnetic Recording Media", Advanced Materials Research, Vols. 123-125, pp. 27-30, 2010

Online since:

August 2010

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Price:

$35.00

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