Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801506 | Journal of Magnetism and Magnetic Materials | 2010 | 4 Pages |
Abstract
The circular permeability, μ=μâ²âjμâ³, of two Fe-based nanocrystalline wires obtained by furnace annealing (S1) and by current annealing (S2) were determined from the measurements of the impedance, Z=R+jÏL, as a function of frequency (f=0.1-100 kHz) and DC bias field (H=0-89 kA/m). So the H-dependent low-f eddy-current anomaly factor, η(H), has been investigated. The experimental results indicate that the sample S2 by current annealing has a larger η=4 than the sample S1 by furnace annealing with η=2.8 at H=0. With increasing H, the η(H) of two samples decreases initially until about H=450 A/m, and then increases very quickly. These results have been analyzed by the helical magnetization model considering the contribution of domain wall displacements (DWD) and domain magnetization rotation (DMR).
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Y.F. Li,