Perpendicular magnetization of long iron carbide nanowires inside carbon nanotubes due to magnetocrystalline anisotropy
Perpendicular magnetization of long iron carbide nanowires inside carbon nanotubes due to magnetocrystalline anisotropy
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DOI：
10.1063/1.3204495
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发表时间：
2009-09
影响因子：
3.2
通讯作者：
U. Weissker;M. Löffler;F. Wolny;M. Lutz;N. Scheerbaum;R. Klingeler;T. Gemming;T. Mühl;A. Leonhardt;B. Büchner
中科院分区：
文献类型：
--
作者：
U. Weissker;M. Löffler;F. Wolny;M. Lutz;N. Scheerbaum;R. Klingeler;T. Gemming;T. Mühl;A. Leonhardt;B. Büchner
Single crystal iron carbide nanowires contained in multiwalled carbon nanotubes have been prepared by aerosol-based thermal chemical vapor deposition. Investigations by transmission electron microscopy reveal the crystallographic [010] axis of the orthorhombic Fe3C nanowires to be predominantly aligned along the nanotube axis. Despite the high aspect ratio of the Fe3C nanowires, magnetic force microscopy measurements imply single domain behavior with the easy magnetic axis of the nanowires perpendicular to the wire axis. In agreement with the structural results, these findings show that the magnetic behavior is dominated by the magnetocrystalline anisotropy contribution, causing the easy axis to be along the [001] direction.
