Abstract
The influence of coil turn number n and sample cross-section S on the Barkhausen noise signal has been studied. Combining the obtained results with our recent findings on the dynamic properties of the magnetic Barkhausen noise, we propose a Faraday-like relation for its rms envelope in the form Urms(H)∝nS·dH/dt. Validity of this relation is proved for classical sample-wrapping coils of the same geometry testing semi-hard thin ribbons of martensitic iron-based steel. The introduced square root dependence is explained by stochastic multiple overlapping of the independent Barkhausen pulses.
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