The Vibration of FINEMET Microribbon in Magnetic Field at Low Sound Frequency

Abstract

The induced by the changing magnetic field bending vibration of the microribbon Fe73.5Cu1Nb3Si13.5B9 with the fixed one end at the range of low sound frequencies is experimentally observed. The as-cast and annealed samples are tested for low-frequency resonant vibrations. In the given region of frequencies for an inducing magnetic field, the resonant frequencies of the induced mechanical vibrations are found. The decay coefficient, measured for the mechanical self-vibration of the annealed sample, is derived. When a relatively weak permanent magnet approaches the microribbons in the direction, perpendicular to the bending vibration, the cessation of the mechanical vibration in the direction is sighted for both, as-cast and annealed samples. The spin nature and the corresponding contribution of the Einstein-de Haas effect are discussed to explain the observed.