Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


Condensed Matter

J. Korean Phy. Soc. 2005; 46(5): 1170

Published online May 15, 2005

Copyright © The Korean Physical Society.

Fabrication of Isolated Magnetic Nanostructures by Using Nanoporous Anodic Alumina Film on Si

S. G. Lee, S. W. Shin, J. Lee, J. H. Lee, T. G. Kim and J. H. Song


Arrays of magnetic Ni nanostructures have been fabricated on a Si substrate by using a nanoporous alumina film as a mask during the deposition. The nanostructures have a truncated cone shape, and the lateral sizes are comparable to the heights. While a continuous film shows well-defined in-plane magnetization, the nanostructure has a perpendicular component of the magnetization at remanence. The hysteretic behavior of the nanostructures is dominated by the demagnetizing field instead of by interaction among the structures.