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Título

Magnetic force microscopy characterization of heat and current treated Fe40Ni38Mo4B18 amorphous ribbons

AutorGarcía, Iñaki; Iturriza, Nuria; Val, Juan J. ; Grande, Hans-Jurgen; Pomposo, José A. ; González, Julián M.
Palabras claveMFM
Amorphous ribbon
Domain pattern
Current annealing
Fecha de publicaciónjul-2010
EditorElsevier
CitaciónJournal of Magnetism and Magnetic Materials 322(13): 1822-1827 (2010)
ResumenThe domain structure of a magnetostrictive Fe40Ni38Mo4B18 amorphous ribbon has been studied using magnetic force microscopy (MFM) at room temperature. First, the evolution of the magnetic domain patterns as a function of the annealing temperature has been investigated. In samples heat treated at 250 and 450 °C for 1 h, a transformation from 90° to 180° domain wall has been clearly observed, while the sample heat treated at 700 °C for 1 h showed a magnetic phase fixed by the crystalline anisotropy. Additionally, the evolution of the magnetic domain structure by applying a DC current was recorded by the MFM technique. For current annealed samples at 1 A for 1, 30 and 60 min, a transformation between different domain patterns has been observed. Finally, in samples treated by the current annealing method under simultaneous stress, an increase of the annealing time gives rise to a different magnetic structure arising from the development of transverse magnetic anisotropy.
Descripción6 páginas, 7 figuras.
Versión del editorhttp://dx.doi.org/10.1016/j.jmmm.2009.12.034
URIhttp://hdl.handle.net/10261/48402
DOI10.1016/j.jmmm.2009.12.034
ISSN0304-8853
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