AFM Magnetic properties Microstructure Nanocrystalline alloys Surface topography
Issue Date:
2006
Publisher:
Journal of Magnetism and Magnetic Materials
Citation:
Volume: 307, Issue: 2, Page : 178-185
Abstract:
In this paper, the effect of microstructural and surface morphological developments on the soft
magnetic properties and giant magneto-impedance (GMI) effect of Fe73.5-xCrxSi13.5B9Nb3Au1 (x=1, 2, 3,
4, 5) alloys was investigated. It was found that the Cr addition causes slight decrease in the mean grain size
of ?-Fe(Si) grains. AFM results indicated a large variation of surface morphology of density and size of
protrusions along the ribbon plane due to structural changes caused by thermal treatments with increasing Cr
content. Ultrasoft magnetic properties such as the increase of magnetic permeability and the decrease of
coercivity were observed in the samples annealed at 540 ?C for 30 min. Accordingly, the GMI effect was
also observed in the annealed samples. ?? 2006 Elsevier B.V. All rights reserved.
