Authors: Gaur, Nikita; Maurer, Siegfried L.; Nunes, Ronald W.; Piramanayagam, S.N.; Bhatia, C.S.

Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 3, March 2011 , pp. 2619-2622(4)

Publisher: American Scientific Publishers

Abstract:

Magnetic and structural properties of ion implanted perpendicular recording media have been investigated. Effects of 12C⁺ ion implantation with the doses of 2 × 10¹¹, 10¹³, 10¹⁴ and 10¹⁶ ions/cm² in the magnetic recording layer of conventional granular and continuous perpendicular media are reported in this paper. Implantation with the highest fluence of 10¹⁶ ions/cm² resulted in change of the magnetization reversal mechanism, thereby reducing coercivity. In continuous media the implanted ions cause increase in pinning defects, leading to an increase in coercivity. In contrast, high dose was found to cause similar change in the crystallographic properties of both the granular and continuous media.

Keywords: ION IMPLANTATION; GRANULAR AND CONTINUOUS MEDIA; MAGNETIC RECORDING MEDIUM

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2011.2713

Publication date: 2011-03-01

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