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Título

Frequency dependence of the magnetoimpedance in amorphous CoP electrodeposited layers

AutorSinnecker, J. P.; Knobel, M.; Pirota, K. R. ; García, J. M.; Asenjo Barahona, Agustina ; Vázquez Valero, Manuela
Palabras claveAmorphous magnetic materials
Electric impedance
Galvanomagnetic effects
Electrodeposits
Fecha de publicación1-may-2000
EditorAmerican Institute of Physics
CitaciónJournal of Applied Physics 87(9): 4825 (2000)
ResumenMagnetic properties and changes of impedance upon external field (MI) are studied in amorphous CoP magnetic layers obtained by galvanostatic electrodeposition over cylindrical Cu substrates. The magnetic layer thickness is controlled by deposition time and varies between 3 and 7 µm. Due to the columnar growth of Co, thicker layers have stronger perpendicular radial anisotropy. The field and frequency dependence of the impedance is measured in the kHz/MHz range. Although it is generally accepted that a radial anisotropy should be unfavorable to the MI effect, an increase of the MI ratio with the thickness of the magnetic layer, and thus with anisotropy, is observed. Results are explained in terms of a model considering the current distribution along the sample thickness with two well-defined regions having different transport and magnetic properties.
Descripción3 pages, 3 figures.-- PACS: 75.50.Kj; 73.50.Jt; 81.15.Pq; 75.30.Gw; 75.50.Cc; 75.70.Ak
Versión del editorhttp://dx.doi.org/10.1063/1.373172
URIhttp://hdl.handle.net/10261/21717
DOI10.1063/1.373172
ISSN0021-8979
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