Title: A review of L1₀ FePt films for high-density magnetic recording

Authors: Jingsheng Chen, Chengjun Sun, Gan Moog Chow

Addresses: Department of Materials Science and Engineering, Data Storage Institute, Singapore 117608, Republic of Singapore. ' Department of Materials Science and Engineering, National University of Singapore, Singapore 119260, Republic of Singapore. ' Department of Materials Science and Engineering, National University of Singapore, Singapore 119260, Republic of Singapore

Abstract: In this paper, we have reviewed the current status of the study of L1₀ FePt alloy films for the application for ultra-high-density magnetic recording. For practical realisation of L1₀ FePt as recording media, issues such as decreasing preparation temperature, easy axis control, and reduction in media noise must be solved. The Ag-doping and strain-inducing methods are the most promising to lower the ordering temperature. However, the films using Ag-doping and strain-inducing method usually showed lower coercivity due to significant amount of defects in the film. Two methods, epitaxial growth and non-epitaxial growth, were introduced to control the easy axis and each method had its advantages and disadvantages. Media noise was also reduced by pinning method.

Keywords: FePt films; magnetic recording media; iron-platinum films; high density recording; epitaxial growth; non-epitaxial growth; media noise; pinning method.

DOI: 10.1504/IJPD.2008.017462

International Journal of Product Development, 2008 Vol.5 No.3/4, pp.238 - 258

Published online: 11 Mar 2008 *

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