Title :
Tailoring the High-Frequency Giant Magnetoimpedance Effect of Amorphous Co-Rich Microwires
Author :
Zhukov, A. ; Talaat, A. ; Ipatov, M. ; Zhukova, V.
Author_Institution :
Dept. de Fsica de Mater., Basque Country Univ., San Sebastian, Spain
Abstract :
We studied the giant magnetoimpedance (GMI) effect and magnetic properties of amorphous Co-rich magnetic microwires prepared by the Taylor-Ulitovski technique. The magnetic field dependence of impedance and the magnetic anisotropy fields can be tailored through the magnetoelastic anisotropy by controllable change of the internal stresses. Co-rich microwires exhibit high (above 300) GMI effect even at gigahertz frequencies. Features of the high-frequency GMI effect were analyzed using a ferromagnetic resonance-like approximation.
Keywords :
amorphous magnetic materials; boron alloys; chromium alloys; cobalt alloys; giant magnetoresistance; internal stresses; iron alloys; magnetic anisotropy; magnetoelastic effects; molybdenum alloys; nickel alloys; silicon alloys; CoCrFeBSi; CoFeNiSiBMo; CoFeNiSiBMoC; Taylor-Ulitovski technique; amorphous Co-rich magnetic microwires; controllable internal stress change; ferromagnetic resonance-like approximation; high-frequency giant magnetoimpedance effect; magnetic anisotropy fields; magnetic field dependence; magnetic properties; magnetoelastic anisotropy; Amorphous magnetic materials; Magnetic fields; Magnetostriction; Perpendicular magnetic anisotropy; Soft magnetic materials; GMI effec; Magnetic anisotropy; Magneto-electronics; Soft magnetic materials; Wires; giant magnetoimpedance effect; magnetic anisotropy; microwires; soft magnetic materials;
Journal_Title :
Magnetics Letters, IEEE
DOI :
10.1109/LMAG.2015.2397877
