FePt nanocluster films for high-density magnetic recording.
High anisotropy L1(0) ordered FePt thin films are considered to have high potential for use as high areal density recording media, beyond 1 Tera bit/in2. In this paper, we review recent results on the synthesis and magnetic properties of L1(0) FePt nanocomposite films. Several fabrication methods have been developed to produce high-anisotropy FePt films: epitaxial and non-epitaxial growth of (001)-oriented FePt:X (X = Au, Ag, Cu, C, etc.) composite films that might be used for perpendicular media; monodispersed FePt nanocluster-assembled films grown with a gas-aggregation technique and having uniform cluster size and narrow size distribution; self-assembled FePt particles prepared with chemical synthesis by reduction/decomposition techniques, etc. The magnetic properties are controllable through variations in the nanocluster properties and nanostructure. FePt and related films show promise for development as heat-assisted magnetic recording media at extremely high areal densities. The self-assembled FePt arrays show potential for approaching the ultimate goal of single-grain-per-bit patterned media.
Xu
Y F
YF
Nebraska Center for Materials and Nanoscience, Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0111, USA.
Yan
M L
ML
Sellmyer
D J
DJ
D000465:Algorithms; D016880:Anisotropy; D016248:Computer Storage Devices; D004563:Electrochemistry / Q000379:methods*; D004867:Equipment Design; D016247:Information Storage and Retrieval; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D010984:Platinum / Q000737:chemistry*; D013997:Time Factors
D010984:Platinum; D007501:Iron