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Frequency- and axial-field-dependent circular magnetization reversal in a stress-annealed Fe-based nanocrystalline wire

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Volume
321
Issue
9
Identifiers
DOI: 10.1016/j.jmmm.2008.10.021
Keywords
  • Fe-Based Nanocrystalline Wire
  • Ac Circular Permeability
  • Domain Nucleation

Abstract

Absract After suitable annealing under a tensile stress, Fe 73.5Cu 1Nb 3Si 13.5B 9 amorphous wire becomes the nano-structured material together with a transverse anisotropy field H k =−3.2 kA/m. Its circular permeability, μ= μ′−j μ″, was determined from the measurements of the impedance, as a function of the frequency ( f=333–33,333 Hz) and amplitude ( I AC =0.1–100 mA) of AC current and the axially applied DC field ( H=0–89 kA/m). We found that the circular technical magnetization of this sample carried out by the spontaneous domain nucleation process. The influences of the AC current frequency and the axial DC field on the circular magnetization have been studied.

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