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Título

Magnetotransport properties of oxidized iron thin films

AutorStankiewicz, Jolanta; Jiménez-Villacorta, Félix ; Prieto, C.
Palabras claveFerromagnetic materials
Magnetic thin films
Hall effect
Magnetoresistance
Nanoparticles
Magnetic particles
Coercive force
Iron compounds
Fecha de publicaciónene-2006
EditorAmerican Physical Society
CitaciónPhysical Review - Section B - Condensed Matter 73(1): 014429.1-014429.6 (2006)
ResumenWe report results of electrical resistivity, Hall effect, and anisotropic magnetoresistance (AMR) measurements performed on thin films (~80 nm) of naturally oxidized iron in the 5 to 300 K temperature range, and in magnetic fields up to 5 T. The films were grown at low temperatures. We find that the resistivity, coercive field, as well as the magnetoresistance of the films are affected by growth conditions, particularly by the substrate temperature which controls the size and shape of crystalline grains. We used AMR as a probe for magnetization reversal studies in our films. We find that the coercive fields vary as as in systems of weakly interacting ensembles of magnetic nanoparticles even though dipole-dipole interactions may well play a significant role.
Descripción6 pages, 7 figures, 1 table.-- PACS number(s): 75.70.Ak, 73.50.Jt, 73.61.At
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.73.014429
URIhttp://hdl.handle.net/10261/19467
DOI10.1103/PhysRevB.73.014429
ISSN1098-0121
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