A theoretical analysis is made of noise of type $1/f^{\alpha}$ arising in the cyclical - magnetic reversal of ferromagnetic films. On the basis of the idea that, in the course of magnetic reversal without saturation of the sample, there is slow variation in the magnitude of the film; volume undergoing magnetic reversal per cycle and also its "switching" moments, an expression is found for the spectral density of the fluctuations of the magnetization, describing the rise in spectral density of the magnetic noise close to frequencies which are multiples of the pumping frequency.
Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.