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Título: | Giant anomalous Hall effect in Fe-based microwires grown by focused-electron-beam-induced deposition |
Autor: | Córdoba, R.; Lavrijsen, R.; Fernández-Pacheco, Amalio CSIC ORCID ; Ibarra, M. Ricardo CSIC ORCID; Schoenaker, F. J.; Teresa, José María de CSIC ORCID | Fecha de publicación: | 2012 | Editor: | Institute of Physics Publishing | Citación: | Journal of Physics D: Applied Physics 45(3): 035001 (2012) | Resumen: | 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 ironcarbonoxygen 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. © 2012 IOP Publishing Ltd. | URI: | http://hdl.handle.net/10261/52763 | DOI: | 10.1088/0022-3727/45/3/035001 | Identificadores: | doi: 10.1088/0022-3727/45/3/035001 issn: 0022-3727 e-issn: 1361-6463 |
Aparece en las colecciones: | (ICMA) Artículos |
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