Magnetoelastic resonance enhancement of longitudinally driven giant magnetoimpedance effect in FeCuNbSiB ribbons
Physica B: Condensed Matter(2010)
Abstract
Longitudinally driven giant magnetoimpedance effect in Fe73.5Cu1Nb3Si13.5B9 ribbons has been investigated. The experimental results showed that a maximum magnetoimpedance ratio of 15462% and a relative sensitivity of 7300%/Oe were achieved in the ribbon with dimensions of 1.5cm×0.8mm×25μm annealed at 480°C. The relative sensitivity was enhanced by 28 times due to the magnetoelastic resonance. The relationship between the magnitude of enhancement and the magnetoelastic coupling coefficient k was analyzed in detail. It was found that the high magnetoelastic coupling coefficient was favorable for achieving large giant magnetoimpedance effect of the specimen.
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Key words
75.50.Kj,75.80.+q,76.90.+d
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