Orientation-controlled nonepitaxial L1₀ CoPt and FePt films

Authors

H. Zeng, University of Nebraska - Lincoln
M.L. Yan, University of Nebraska - Lincoln
Nathan D. Powers, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Date of this Version

4-1-2002

Comments

Published by American Institute of Physics. Appl. Phys. Lett. 80, 2350-2352 (2002). ©2002 American Institute of Physics. Permission to use. http://apl.aip.org/jap/.

Abstract

We report results on highly oriented, face-centered tetragonal ordered CoPt and FePt thin films grown nonepitaxially by directly depositing films on thermally oxidized Si substrates and subsequent annealing. By controlling the thickness, composition, and annealing conditions, and/or depositing a proper underlayer, nearly perfect (001)-oriented CoPt and FePt films can be obtained. Magnetic measurements reveal large perpendicular anisotropy for such films.