Amorphous ferromagnetic microwires: Methods of fabrication and measurements of the magnetic properties

Abstract

Experimental study of the magnetic properties of amorphous ferromagnetic glass-coated microwires includes usually four types of measurements: magnetic field dependence of the velocity of the domain wall propagation by Sixtus-Tonks method, the hysteresis loops by induction or vibrating sample magnetometry methods and both measurements of the local nucleation fields distribution and magnetostriction coefficient — using special custom devices. In this paper we are demonstrating application of these techniques to study the archetypic amorphous glass-covered microwire with Fe 77.5 Si 7.5 B 15 composition (14 μm diameter of metallic core and 28 μm full diameter) and briefly review a process of preparation and a typical initial characterization.