Title: Initial layer in FePt perpendicular media with different buffer layers

Authors: B.C. Lim, J.S. Chen, G.M. Chow

Addresses: Data Storage Institute, A*STAR (Agency for Science, Technology and Research), 117608, Singapore. ' Department of Materials Science and Engineering, National University of Singapore, 117574 Singapore. ' Department of Materials Science and Engineering, National University of Singapore, 117574 Singapore

Abstract: The initial layer of FePt media on CuRu underlayer with different buffer layer was investigated. FePt film showed isotropic magnetisation behaviour when deposited directly on CrRu underlayer. With a 4 nm Pt buffer layer, even 3 nm thick FePt film possessed dominant out-of-plane anisotropy. It was found that the initial growth layer thickness (tinitial) in FePt was reduced from 1.4 nm to 0.8 nm with the Pt buffer layer. With MgO as buffer layer the tinitial was further reduced to 0.6 nm.

Keywords: FePt; iron platinum; perpendicular media; initial growth layer; buffer layers; copper ruthenium; CuRu underlayer.

DOI: 10.1504/IJSURFSE.2009.024364

International Journal of Surface Science and Engineering, 2009 Vol.3 No.1/2, pp.103 - 113

Available online: 01 Apr 2009 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article