Title :
Fe- and Fe3C-filled carbon nanotube-aligned arrays and flower-like carbon nanostructured clusters with a high coercivity
Author :
Jun Su ; Yihua Gao ; Min Sun ; Xiangyun Han ; Xianghui Zhang ; Qi Zhang
Author_Institution :
Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China
fDate :
3/1/2012 12:00:00 AM
Abstract :
Fe- and Fe3C-filled carbon nanostructures were synthesised by simply catalytically pyrolysing ferrocene and acetonitrile. The novel hybrid structures fabricated were thoroughly characterised by X-ray diffraction, scanning and transmission electron microscopy, electron energy loss spectroscopy, Raman spectroscopy and magnetic measurement. Aligned arrays of Fe- and Fe3C-filled carbon nanotubes (CNTs) and flower-like Fe3C-filled N-doped multi-branched CNTs clusters were revealed. High coercivity of 670 Oe for the flower-like nanostructures was observed, and the possible mechanism for coercivity enhancement was discussed.
Keywords :
Raman spectra; X-ray diffraction; carbon nanotubes; catalysis; coercive force; electron energy loss spectra; iron; iron compounds; nanofabrication; nanomagnetics; nitrogen; pyrolysis; scanning electron microscopy; transmission electron microscopy; Fe-C; Fe3C-C; Fe3C-C:N; Raman spectroscopy; X-ray diffraction; acetonitrile; carbon nanotube-aligned arrays; catalytical pyrolysis; coercivity; coercivity enhancement; electron energy loss spectroscopy; ferrocene; flower-like N-doped multibranched clusters; flower-like carbon nanostructured clusters; hybrid structures; magnetic measurement; scanning electron microscopy; transmission electron microscopy;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2011.0597
