An engineering review about microwire

Magnetic glass-coated micro- and nanowires was produced by Taylor¿Ulitovsky method. In this method, the metal drop is melted by induction and encapsulated in a stable viscous sheath of a silicate glass that is drawn down continuously. Metal and silicate are solidified by a jet of water to form metallic micro- and nanowire a coated by silicate glass. The geometrical characteristics of the microwire depend on the physical properties of a metallic alloy and of glass, on the diameter of the glass tube, and the parameters of the heating inductor. These wires are characterized by a rectangular hysteresis loop, and they can be used in measuring and identification engineering. A mathematical model that describes the process of the reversal magnetization of an amorphous microwire with the help of a large Barkhausen jump is proposed. Glass-coated micro- and nanowires obtain interesting electromagnetic absorption properties. Of particular interest is the natural ferromagnetic resonance (NFR) observed as a consequence of a strong intrinsic magnetoelastic anisotropy. We introduced an analysis of the opportunity of application of these materials in composite protective screens.