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Title

Correlation between magnetic and transport properties in nanocrystalline Fe thin films: A grain-boundary magnetic disorder effect

AuthorsSefrioui, Z.; Menéndez, José Luis CSIC ORCID; Navarro, E.; Cebollada, Alfonso CSIC ORCID; Briones Fernández-Pola, Fernando; Crespo, P.; Hernando, A.
Issue Date26-Nov-2001
PublisherAmerican Physical Society
CitationPhysical Review B 64, 224431 (2001)
AbstractWe report on transport and magnetic measurements of islanded Fe(110) thin films. The electrical resistivity exhibits an anomalous increase at low temperatures, which disappears under the action of a magnetic field. Since such an anomaly completely disappears under the action of a magnetic field, it is inferred that it originates from spin-dependent scattering. We interpret the strong changes in the spin-dependent scattering in our films to be due to a low-temperature spin freezing of the island boundary magnetic regions that impedes ferromagnetic exchange between islands. A consequence of this magnetic behavior is the random arrangement of the individual magnetization, determined by the magnetocrystalline anisotropy of each island, resulting in an increase of the resistivity below the freezing temperature.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.64.224431
URIhttp://hdl.handle.net/10261/26024
DOI10.1103/PhysRevB.64.224431
ISSN0163-1829
Appears in Collections:(IMN-CNM) Artículos

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