Open AccessANALYSIS OF EDDY-CURRENT-LOSS IN Fe-BASED AMORPHOUS WIRES
Author(s) -
Yinfeng Li,
Du-Xing Chen,
Guo Huiqun,
M. Vázquez,
A. Hernando
Publication year - 2000
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.49.1591
Subject(s) - eddy current , amorphous solid , anisotropy , condensed matter physics , ohm , materials science , shell (structure) , permeability (electromagnetism) , core (optical fiber) , physics , current density , nuclear magnetic resonance , composite material , optics , crystallography , chemistry , quantum mechanics , membrane , biology , genetics
On the basis of core-shell structure model of amorphous wires, for Fe-based amorphous wire we consider that there are an axial anisotropy Kc in the core and a radial anisotropy Ks in the shell, both of Kc and Ks are functions of λs and σ0,the constants of stress energy density. We deduce the ac circular permeability μφ(r) and calculate the anomaly factor of low-frequency eddy-current-loss for this model,η=2.2, from Maxwell equation and Ohm's law. Comparison of the theoretical value with the experimental results indicates that the magnetic structure of Fe-based amorphous wires can be well described by this improved core-shell structure model.