MODELING OF BARKHAUSEN-NOISE IN MAGNETIC CORE MATERIAL - APPLICATION OF PREISACH-MODEL

The Preisach model is utilized to model Barkhausen noise in magnetic c ore materials. Barkhausen noise is generated each time the magnetizati on goes through a sudden change at a local site in the core material. In this article we examine the relationship between the shape of magne tization hysteresis loops to details of Barkhausen noise levels or exc itations. On the basis of hysteresis loops alone it may be possible to profile the noise spectrum of a magnetic core. (C) 1997 American Inst itute of Physics.