Title: Fabrication of FePt/M (M = C, Ag, Si) nanoparticulate thin films with perpendicular anisotropy

Authors: Yunhe Huang, Jun Wan, Yong Zhang, George Hadjipanayis

Addresses: Department of Physics, University of Delaware, DE 19716, USA. ' Department of Physics, University of Delaware, DE 19716, USA. ' Department of Physics, University of Delaware, DE 19716, USA. ' Department of Physics, University of Delaware, DE 19716, USA

Abstract: FePt-based nanoparticulate thin films have been deposited by sputtering onto single crystal MgO [100] substrates at elevated temperatures up to 650°C. The deposited FePt film showed a [001] texture due to lattice matching between FePt and MgO substrate. The effects of an additional element on the magnetic and structural properties have been studied; addition of Ag leads to a lower transformation temperature from the disordered fcc to the ordered L10 phase. Si addition leads to a ternary FePtSi system where Si atoms enter into the FePt lattice interstitially, resulting in changes of lattice parameters and magnetic properties.

Keywords: FePt films; iron-platinum films; perpendicular recording; high anisotropy; magnetic thin films; nanoparticulate thin films.

DOI: 10.1504/IJPD.2008.017463

International Journal of Product Development, 2008 Vol.5 No.3/4, pp.259 - 267

Published online: 11 Mar 2008 *

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