Paper Title:
Effect of Thicknesses on the Microstructure and Magnetic Properties of CoPt Thin Films
  Abstract

The microstructures and magnetic properties of CoPt thin films with thicknesses between 1 and 20 nm deposited on amorphous glass substrate and post-annealing at 600°C for 30 min were investigated. The morphology of CoPt thin film would change from a discontinuous nano-size CoPt islands into a continuous film gradually as the film thickness was increased from 1 to 20 nm. The formation mechanism of the CoPt islands may be due to the surface energy difference between the glass substrate and CoPt alloy. Each CoPt island could be a single domain particle. This discontinuous nano-island CoPt recording film may increase the recording density and enhance the signal to noise ratio while comparing with the continuous film. The as-deposited 5 nm CoPt film revealed the separated islands morphology after annealing at 600°C for 30 min. This nano-size CoPt thin film may be a candidate for ultra-high density magnetic recording media due to its discontinuous islanded nanostructure.

  Info
Periodical
Advanced Materials Research (Volumes 123-125)
Edited by
Joong Hee Lee
Pages
655-658
DOI
10.4028/www.scientific.net/AMR.123-125.655
Citation
C. L. Shen, P. C. Kuo, G.P. Lin, Y.S. Li, S. L. Ou, S.C. Chen, "Effect of Thicknesses on the Microstructure and Magnetic Properties of CoPt Thin Films", Advanced Materials Research, Vols. 123-125, pp. 655-658, 2010
Online since
August 2010
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