Fabrication and magnetic behaviour of 2D ordered Fe/SiO2 nanodots array

Solid and Condensed State Physics

DOI: 10.1140/epjb/e2006-00250-6

Cite this article as:
Liu, W., Zhong, W., Qiu, L. et al. Eur. Phys. J. B (2006) 51: 501. doi:10.1140/epjb/e2006-00250-6

Abstract.

We have demonstrated a simple and universal morphology-controlled growth of 2D ordered Fe/SiO2 magnetic nanodots array, which was based on 2D colloidal monolayer template composed of polystyrene (PS) spheres and one-step sol-gel spin-coating technique. The Fe/SiO2 nanodots have a well-ordered structure arranged in a hexagonal pattern. The dots have the shape of quasi-pyramidal tetrahedron, which reside in the interstitial region between three PS spheres and the substrate. Magnetic measurements reveal that the nanodots array exhibits the in-plane easy magnetization direction. Compared with the unpatterned Fe/SiO2 thin film, the dots array has lower saturated field, higher remanence and coercivity. The present method is applicable to 2D ordered nanodots array of other magnetic materials.

PACS.

75.50.Bb Fe and its alloys75.75.+a Magnetic properties of nanostructures81.07.-b Nanoscale materials and structures: fabrication and characterization

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  • W. Liu
    • 1
    • 2
  • W. Zhong
    • 1
  • L. J. Qiu
    • 1
  • L. Y. Lü
    • 1
  • Y. W. Du
    • 1
  1. 1.National Laboratory of Solid State Microstructures, Jiangsu Provincial Laboratory for NanoTechnology, Nanjing UniversityNanjingP.R. China
  2. 2.College of Science, South China Agriculture UniversityGuangzhouP.R. China