L1₀,(001)-oriented FePt:B₂O₃ composite films for perpendicular recording

Authors

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

Date of this Version

5-15-2002

Comments

Published by American Institute of Physics. J. Appl. Phys. 91, 8471-8473 (2002). ©2002 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

A multilayered deposition structure was developed for fabricating FePt:B₂O₃ films. We successfully obtained nanostructured FePt:B₂O₃ films with FePt grains aligned perpendicular to film plane by postannealing the as-deposited multilayers at 550 °C for 30 min. It was found that development of (001) texture depends strongly on the total film thickness, initial B₂O₃ layer thickness, and Fe concentration. Nearly perfect (001) orientation of FePt-ordered grains can be obtained in the films with small total film thickness, large initial B₂O₃ layer thickness, and slightly higher Fe concentration. Our results show that highly (001) oriented films with ordered fct phase have significant potential as perpendicular media for extremely high-density recording.