TY - JOUR
T1 - Giant anomalous Hall effect in Fe-based microwires grown by focused-electron-beam-induced doposition
AU - Cordoba Castillo, R.M.
AU - Lavrijsen, R.
AU - Fernández-Pacheco, A.
AU - Ibarra, M.R.
AU - Schoenaker, F.J.
AU - Ellis, T.H.
AU - Barcones Campo, B.
AU - Kohlhepp, J.T.
AU - Swagten, H.J.M.
AU - Koopmans, B.
AU - Mulders, J.J.L.
AU - De Teresa, J.M.
PY - 2012
Y1 - 2012
N2 - We report the temperature dependence of the resistivity, the anisotropic magnetoresistance and
the Hall effect of iron microwires grown by focused-electron-beam-induced deposition. By
modifying the growth conditions in a controllable way, we study wires with iron compositions
varying from 45% to 70%, which present different electrical conduction mechanisms, with
resistivity values differing over three orders of magnitude. The magnetoresistance depends
highly on the composition, and it can be understood by a subtle interplay between the
anisotropic magnetoresistance and intergrain magnetoresistance due to their complex
microstructure, consisting of an iron–carbon–oxygen amorphous matrix. A giant value for the
anomalous Hall effect is found, which we explain by a large contribution of the skew
scattering mechanism. The present results emphasize the correlation between the exotic
microstructure of the microwires, and their magnetotransport properties.
AB - We report the temperature dependence of the resistivity, the anisotropic magnetoresistance and
the Hall effect of iron microwires grown by focused-electron-beam-induced deposition. By
modifying the growth conditions in a controllable way, we study wires with iron compositions
varying from 45% to 70%, which present different electrical conduction mechanisms, with
resistivity values differing over three orders of magnitude. The magnetoresistance depends
highly on the composition, and it can be understood by a subtle interplay between the
anisotropic magnetoresistance and intergrain magnetoresistance due to their complex
microstructure, consisting of an iron–carbon–oxygen amorphous matrix. A giant value for the
anomalous Hall effect is found, which we explain by a large contribution of the skew
scattering mechanism. The present results emphasize the correlation between the exotic
microstructure of the microwires, and their magnetotransport properties.
U2 - 10.1088/0022-3727/45/3/035001
DO - 10.1088/0022-3727/45/3/035001
M3 - Article
SN - 0022-3727
VL - 45
SP - 035001-1/9
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 3
M1 - 035001
ER -