Magnetic properties of self-assembled Co nanowires of varying length and diameter

H. Zeng, M. Zheng, R. Skomski, D. J. Sellmyer, Y. Liu, L. Menon, S. Bandyopadhyay

Research output: Contribution to journalConference article

241 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)4718-4720
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 II
DOIs
StatePublished - May 2000
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: Nov 15 1999Nov 18 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Zeng, H., Zheng, M., Skomski, R., Sellmyer, D. J., Liu, Y., Menon, L., & Bandyopadhyay, S. (2000). Magnetic properties of self-assembled Co nanowires of varying length and diameter. Journal of Applied Physics, 87(9 II), 4718-4720. https://doi.org/10.1063/1.373137