Title :
Internal magnetoimpedance of amorphous wires
Author :
Raposo, V. ; Iñiguez, J.I. ; García, D. ; Flores, A.G. ; Vázquez, M.
Author_Institution :
Univ. of Salamanca, Spain
Abstract :
Analysis of the usual experimental method to quantify the giant magnetoimpedance (GMI) effect indicates that at high enough working frequencies the values of the impedance can be largely influenced by parasitic impedances of the circuit that affect significantly the analysis of the data. A discussion is introduced on the intrinsic impedance for a Co-based amorphous wire and the actual intrinsic value when parasitic impedances are cancelled.
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic hysteresis; magnetostriction; metallic glasses; silicon alloys; skin effect; 1 to 8 MHz; 10 to 30 MHz; Co68.15Fe4.35Si12.5B15; Co68.15Fe4.35Si12.5B15 amorphous wires; GMI effect; giant magnetoimpedance effect; hysteresis loops; internal magnetoimpedance; intrinsic impedance; magnetostriction; parasitic impedances; skin effect; working frequencies; Amorphous magnetic materials; Amorphous materials; Electrical resistance measurement; Frequency; Impedance measurement; Magnetic field measurement; Magnetostriction; Skin effect; Surface impedance; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816014
