Research Papers in Physics and Astronomy

 

Date of this Version

May 2000

Comments

Published by American Institute of Physics. J. Applied Physics 87, 4718 (2000). ©2000 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

Ferromagnetic Co nanowires have been electrodeposited into self-assembled porous anodic alumina arrays. Due to their cylindrical shape, the nanowires exhibit perpendicular anisotropy. The coercivity, remanence ratio, and activation volumes of Co nanowires depend strongly on the length, diameter, and spacing of the nanowires. Both coercivity and thermal activation volume increase with increasing wire length, while for constant center-to-center spacing, coercivity decreases and thermal activation volume increases with increasing wire diameter. The behavior of the nanowires is explained qualitatively in terms of localized magnetization reversal.

Included in

Physics Commons

Share

COinS