Barkhausen noise, subloops, demagnetization curves and universal scaling tuning disorder, field sweep rate, and history

Karin A. Dahmen, John H. Carpenter, A. P. Mehta, A. C. Mills, J. P. Sethna, A. Travesset, M. B. Weissman, R. A. White

Research output: Contribution to journalConference article


Brkhausen Noise, suploops, demangnetization curves and disorder induced critical behavior, and field sweep rate were discussed. The occurrence of critical point in subloops in the Random field Ising model (RFIM) was also discussed. It was suggested that RFIM also predicts disorder induced critical behavior in the demagnetization curve, or initial magnetization curve and the associated Brakhausen Noise. It was also suggested that ferromagnetic materials with a remanent magnetization can be demagnetized by applying and oscillating magnetic field with amplitude slowly decreasing form a large initial value to zero.

Original languageEnglish (US)
Pages (from-to)1-3
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Sep 14 2004
EventFluctuations and Noise in Materials - Maspalomas
Duration: May 26 2004May 28 2004


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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