Open AccessStudy on the magnetic anisotropy of the (Fe1-xCox)84Zr3.5Nb 3.5B8Cu1 nano-crystallite ribbon with the metho d of magnetic resonance
Author(s) -
Bingzhe Hou,
Fengyan Liu,
Haijuan Guo
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.2622
Subject(s) - condensed matter physics , anisotropy , ribbon , crystallite , materials science , magnetic anisotropy , ferromagnetic resonance , ferromagnetism , nuclear magnetic resonance , magnetic field , resonance (particle physics) , magnetization , physics , atomic physics , composite material , optics , quantum mechanics , metallurgy
We have carried out an experimental study based upon the ferromagnetic resonance (FMR) on the anisotropy of alloy ribbons of (Fe1-xCox)84Zr3.5Nb3.5B8Cu1(x=0.0, 0.2, 0.4, 0.6, 0.8). The easy axes of the samples are in the lateral direction of the ribbons, While the single-axis anisotropy c onstant K′ of the samples having the same width decreases as the amount of Co i ncreases. The value of K′ lies between 4.67×10-5J/m4(x=0 .0) and 2.54× 10-5J/m4(x=0.8). Since the imaginary part χ″ of the alte rnating curren t magnetic susceptibility changes nonlinearly with the magnetic field H, there is a low field (0—12 mT) non_resonance signal having a comparable strength wit h that of the ferromagnetic resonance signal. It is found through the study on t he magnetic process of the alloy ribbon of Fe84Zr3.5Nb3.5B8C u1 that dχ″/dH=0 in the regions of the reversible (0—12 mT) and saturated (9.0 mT—12 mT) magnetization that χ″(H) is related to the n_th power of H, i .e., Hn(n≥3) when the domain wall motion is nonreversible; and χ″ is relate d to H2 during the domain rotation (Rayleigh region, dχ″dH is a con stant). S pecifically, it is found that the χ″(H) proportional to H2 and tha t proportional to Hn(n≥3) appear alternatively in three sections, correspon ding to the disappearance of different domains.