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Longitudinally driven giant magneto-impedance effect enhancement by magneto-mechanical resonance

Authors:	WY Gong ZM WuH Lin XL YangZJ Zhao

Institution:	Department of Physics, Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, China

Abstract:	Longitudinally driven giant magneto-impedance (GMI) effect in amorphous magnetostrictive Fe₂₄Co_11.82Ni_47.3Si_1.47B₁₅ ribbons was investigated. The experimental results showed that the magneto-mechanical resonance of the ribbons had significantly enhanced GMI effect. The strong magneto-mechanical coupling (MMC) interaction resulted in high MI ratio. Maximal GMI ratio of 1532% was obtained in the sample annealed at 340 °C under transverse magnetic field. The results are explained in terms of MMC and resonance of the magnetostrictive materials.

Keywords:	Amorphous ribbon Magneto-mechanical resonance Magneto-mechanical coupling Longitudinally driven giant magneto-impedance
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