Journal of Applied Physics · 2007 · 16 citations · 11 references
Natural SciencesMaterials SciencePhysicsElectromagnetismMagnetic MaterialsRadiation PhysicsAmorphous Magnetic MaterialsFerromagnetismIon ExchangeMagnetic AnisotropyMagnetism In SolidsMagnetization ProcessesCoercivityCoercivity EnhancementExchange CouplingGiant MagnetoimpedanceIon Beam IrradiationIon Species DependenceMagnetic CoercivityMagnetic Properties
The effects of ion irradiation on a giant magnetoimpedance (GMI) have been investigated for a Co-based amorphous ribbon with various kinds of ions such as Xe, Ar, and N. The GMI ratio and M-H loop parameters were used to characterize the samples before and after the ion irradiation. The GMI ratio increased considerably in the ion irradiated samples and the GMI response showed a strong dependence on the irradiated ion species and driving frequencies. It was shown that the ion irradiations lead to a substantial modification of the magnetic properties including a large coercivity and shearing of the in-plane magnetization loops, thus suggesting the reduction of an exchange coupling.
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