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Influences of axial field upon circular magnetization and eddy‐current anomaly factor in Fe‐based nanocrystalline wire
Author(s) -
Li Y. F.,
Vázquez M.
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026360
Subject(s) - condensed matter physics , magnetization , eddy current , nanocrystalline material , permeability (electromagnetism) , magnetic field , electrical impedance , anisotropy , materials science , amplitude , nuclear magnetic resonance , transverse plane , physics , chemistry , optics , biochemistry , structural engineering , engineering , quantum mechanics , membrane , nanotechnology
Fe‐based soft magnetic wire with transverse magnetic anisotropy was obtained by stress current annealing. Its circular permeability, µ = µ ′ – j µ ″, has been determined from the measurements of impedance, Z = R + j ωL , as a function of frequency ( f = 10 – 10 5 Hz), AC current amplitude ( I = 0.1 – 100 mA) and DC bias field ( H = 0 – 5.4 kA/m). An experimental study of the influence of H upon the circular magnetization and the f‐dependent µ = µ ′ – j µ ″ has been performed. It is concluded that the axial field, H , evolution of the circular permeability, µ = µ ′ – j µ ″, the relaxation frequency, f τ , and the eddy‐current anomaly factor, η , can be explained in terms of the modification of domain structure by the applied axial field H .