Domain Wall Propagation in Bistable Amorphous Microwires

Tendency on miniaturization of the modern magnetic sensors and devices stimulates development of such magnetic materials with reduced dimensionality. Therefore magnetic materials with outstanding magnetic characteristics and reduced dimensionality recently gained much attention. Consequently thin wire with reduced geometrical dimensions (of order of 1-30 μm in diameter) gained importance within last few years [1,2]. These thin wires combine excellent soft magnetic properties (with coercivities till 4 A/m) with and unusual re-magnetization process in positive magnetostriction compositions exhibiting magnetically bistable behaviour and fast domain wall propagation [1-4]. In this paper we’ll recent results on domain wall (DW) propagation in these microwires