Jump to main content
Jump to site search

Issue 13, 2012
Previous Article Next Article

Unique magnetic properties and magnetization reversal process of CoFe2O4 nanotubes fabricated by electrospinning

Author affiliations

Abstract

CoFe2O4 nanotubes have been directly fabricated by single-capillary spinneret electrospinning. The external diameter of the CoFe2O4 nanotubes ranges from 60 nm to 160 nm. The morphology and structure characterizations show that individual CoFe2O4 nanotubes are made of CoFe2O4 nanocrystals stacking along the nanotubes with no preferred growth directions and these individual nanocrystals are single crystal with a cubic spinel structure. Each nanocrystal was shown to be a single magnetic domain. The magnetic measurements show that the coercivity (Hc) of the CoFe2O4 nanotubes decreases from 10 400 Oe at 5 K to 300 Oe at 360 K. The CoFe2O4 nanotubes have a spin reorientation (SR) at 5 K, which is different from CoFe2O4 nanorods and nanoparticles. Based on the observed morphology and crystal structure, a micromagnetic model, “chain-of-rings”, is developed to interpret the magnetic behavior of the CoFe2O4 nanotubes. The theoretical coercivity (534 Oe) is in good agreement with the experimental results (509 Oe). It is believed that our work should open a new route to prepare various magnetic ferrite nanotubes and is significant for expanding the application of CoFe2O4 into the new fields.

Graphical abstract: Unique magnetic properties and magnetization reversal process of CoFe2O4 nanotubes fabricated by electrospinning

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Feb 2012, accepted on 18 Apr 2012 and first published on 23 Apr 2012


Article type: Paper
DOI: 10.1039/C2NR30487B
Nanoscale, 2012,4, 3932-3936

  •   Request permissions

    Unique magnetic properties and magnetization reversal process of CoFe2O4 nanotubes fabricated by electrospinning

    J. Fu, J. Zhang, Y. Peng, J. Zhao, G. Tan, N. J. Mellors, E. Xie and W. Han, Nanoscale, 2012, 4, 3932
    DOI: 10.1039/C2NR30487B

Search articles by author

Spotlight

Advertisements