Research Papers in Physics and Astronomy
FePt nanodot arrays with perpendicular easy axis, large coercivity, and extremely high density
Date of this Version
Ordered FePt nanodot arrays with extremely high density have been developed by physical vapor deposition using porous alumina templates as evaporation masks. Nanodot diameter of 18 nm and periodicity of 25 nm have been achieved, resulting in an areal density exceeding 1 x1012 dots/in2. Rapid thermal annealing converts the disordered fcc to L10 phase, resulting in (001)-oriented FePt nanodot arrays with perpendicular anisotropy and large coercivity, without the need of epitaxy. High anisotropy and coercivity, perpendicular easy axis orientation and extremely high density are desirable features for future magnetic data storage media applications.
Published by American Institute of Physics. Appl. Phys. Lett. 91, 172508 2007. © 2007 American Institute of Physics. Permission to use. http://apl.aip.org/.