Magnetoimpedance Effect in Nanocrystalline Fe91.5-xZr7BxCu1Al0.5(x=2, 4, 6, 8) Alloys

Longitudinally driven giant magnetoimpedance effect in stress-annealed Fe-based nanocrystalline ribbons

A high-frequency longitudinally driven giant magnetoimpedance ~GMI! effect has been measured in stress-annealed Fe73Cu1Nb1.5V2Si13.5B9 nanocrystalline ribbons. Based on how the impedance phase varies with the external magnetic field, it becomes clear that the imaginary part of the complex permeability, m9, which is related to magnetic losses, plays an important role in the high-frequency longit...

High-temperature giant magnetoimpedance in Fe-based nanocrystalline alloy

Giant magnetoimpedance ~GMI! was investigated from room temperature up to 823 K in an Fe-based nanocrystalline Fe73.0Cu1.0Nb2.5V1.0Si13.5B9.0 ribbon. With an increment of the measuring temperature ~T!, GMI shows notable enhancement followed by a declining dependence, yielding a maximum value around 603 K where the relative GMI is nearly four times that at room temperature. The field at the peak...

Nanocrystalline Soft Magnetic Alloys

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Surface Features of Nanocrystalline Alloys

Nanocrystalline alloys are prepared by controlled annealing of metallic glass precursors. The latter are obtained by rapid quenching of a melt on a rotating wheel. This process leads to structural deviation of the produced ribbons’ surfaces. Structural features of as-quenched and thermally annealed 57Fe81Mo8Cu1B10 ribbons were studied employing Conversion Electron Mössbauer Spectrometry (CEMS) ...

Oxidation Resistance of Nanocrystalline Alloys