Magnetic and magnetotransport behavior of granular FexAg100−x thin films

We present magnetic and magnetotransport properties of FexAg100−x granular thin films prepared by the pulsed laser deposition technique. Increasing the Fe nanoparticles, x, the interactions among them modify the magnetic response from an interacting superparamagnetism to a ferromagnetic-like behavio...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2007-04, Vol.353 (8-10), p.944-946
Main Authors: Sarmiento, G., Fdez-Gubieda, M.L., Orue, I.
Format: Article
Language:English
Subjects:
colloids and quantum structures
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Diamagnetism, paramagnetism and superparamagnetism
Exact sciences and technology
Giant magnetoresistance
Laser deposition
Magnetic properties
Magnetic properties and materials
Magnetotransport phenomena, materials for magnetotransport
Nanoparticles
Physics
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Summary:We present magnetic and magnetotransport properties of FexAg100−x granular thin films prepared by the pulsed laser deposition technique. Increasing the Fe nanoparticles, x, the interactions among them modify the magnetic response from an interacting superparamagnetism to a ferromagnetic-like behavior with a crossover at x=25. For this value, an extraordinary Hall effect becomes dominant while magnetoresistance decrease. The appearance of in-plane anisotropies are discussed through the study of extraordinary Hall effect.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2006.12.078