Stationarity and Behaviour of Barkhausen Noise in Magnetic Thin Films

Wiegman, N. J.; Stege, R. ter; Kuyper, A. H. de

doi:10.1007/978-3-642-87640-0_32

Cited by 1 publication

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“…[1][2][3][4][5] We need to analyze them in detail because they represent a fundamental basis for further investigations, and because they also show all the difficulties to interpret the data. The Ph.D thesis of N.J. Wiegman in 1979 1 investigated the noise properties of Permalloy thin films with variable thicknesses, using an inductive setup.…”

Section: Barkhausen Noisementioning

confidence: 99%

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Two dimensional models for Barkhausen noise

Durin

Zapperi

2005

SPIE Proceedings

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We analyze the current experimental and theoretical research about the magnetization (Barkhausen) noise in magnetic thin films. We observe that, in respect to three-dimensional systems, the situation is much more complicated, and many details still have to be analyzed and understood. In particular, the critical exponents must be correctly analyzed when compared with the theoretical predictions. We observe, for instance, that the measured magnetization steps in optical measurements do not actually correspond to the avalanche size, as claimed, but to a different quantity having a different critical exponent. We also observe as the lack of a significative demagnetizing field does not assure to have a stationary Barkhausen signal, which again implies a different set of exponents. For comparison, we report in detail all the possible theoretical values of the critical exponents calculated for a single DW model.

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Section: Barkhausen Noisementioning

confidence: 99%

“…the Barkhausen noise), it is remarkable that only a few number of experimental papers [1][2][3][4][5] have considered so far the properties of the noise in two dimensional systems, i.e. in thin magnetic films.…”

Section: Introductionmentioning

confidence: 99%

Two dimensional models for Barkhausen noise

Durin

Zapperi

2005

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

Stationarity and Behaviour of Barkhausen Noise in Magnetic Thin Films

Cited by 1 publication

References 4 publications

Two dimensional models for Barkhausen noise

Two dimensional models for Barkhausen noise

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