Open AccessTheoretical study on the influence of the microstructure of Fe73.5Cu1Nb3Si13.5B9 on its giant magneto-impedance effect
Author(s) -
Yang Quan-min,
Lingling Wang,
Sun De-Cheng
Publication year - 2005
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.54.5730
Subject(s) - nanocrystalline material , materials science , microstructure , mesoscopic physics , nanocrystal , alloy , giant magnetoimpedance , permeability (electromagnetism) , composite material , condensed matter physics , giant magnetoresistance , nanotechnology , magnetic field , physics , magnetoresistance , quantum mechanics , membrane , biology , genetics
Based on the experimental results of atomic force microscope observation of the microstructure and the giant magneto-impedance (GMI) effect of Fe73.5Cu1Nb3Si13.5B9 nanocrystalline alloy, we propose a model for exploring the influence of the microstructure on the GMI effect in this kind of Fe-based nanocrystalline soft magntic alloy which explains successfully the GMI behavior at low frequency. The model possesses the main features of the sandwiched model while eliminating its deficiencies. This model is called the mesoscopic model. We also point out the influence of the electrical conductivity σ and the permeability μ of nanocrystal grains on the GMI effect of the Fe-based nanocrystalline alloys.