Dynamic properties of micro-magnetic noise in soft ferromagnetic materials

0494131 - FZÚ 2019 RIV NL eng J - Journal Article
Stupakov, Alexandr - Perevertov, Alexej
Dynamic properties of micro-magnetic noise in soft ferromagnetic materials.
Journal of Magnetism and Magnetic Materials. Roč. 456, Jun (2018), s. 390-399. ISSN 0304-8853. E-ISSN 1873-4766
R&D Projects: GA ČR GB14-36566G; GA ČR GA13-18993S
Institutional support: RVO:68378271
Keywords : magnetization dynamics * Barkhausen noise * magneto-acoustic emission * magnetic hysteresis * electrical steel
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.683, year: 2018

Dynamic response of magnetic hysteresis, magnetic Barkhausen noise and magneto-acoustic emission in a soft ribbon and electrical steels was studied comprehensively. The measurements were performed under controllable magnetization conditions: sinusoidal/triangular waveforms of the magnetic induction and a triangular waveform of the magnetic field. Magnetizing frequency was varied in a wide range. It was found that intensity of the Barkhausen noise rises approximately as a square root function of the magnetizing frequency. Whereas, level of the magneto-acoustic emission follows the hysteresis loss trend with an additional linear term (classical loss component).

Permanent Link: http://hdl.handle.net/11104/0287391