Abstract
We provide an overview of the tools directed to reversible and irreversible transformations of the magnetic structure of glass-covered microwires. The irreversible tools are the selection of the chemical composition, geometric ratio, and the stress-annealing. For reversible tuning we use the combination of magnetic fields and mechanical stresses. The studies were focused on the giant magnetoimpedance effect and the velocity of the domain walls propagation important for the technological applications. The essential increase of the giant magnetoimpedance effect and the control of the domain wall velocity were achieved as a result of the use of two types of control tools. The performed simulations reflect the real transformation of the helical domain structures experimentally found.
Highlights
Magnetic wires receive permanent interest because of specific magnetic, electric, and magneto-optical properties, which find the realization in wide gamma of electronic devices [1,2,3,4,5,6].The importance and novelty of our work is determined basically by the technological application of the microwires
We have focused this paper on these tools influencing on magnetic softness, giant magnetoimpedance effect (GMI) effect, and single domain wall (DW) velocity in amorphous glass-coated microwires
One of the main tools causing the irreversible transformation is annealing in the presence of stress
Summary
Magnetic wires receive permanent interest because of specific magnetic, electric, and magneto-optical properties, which find the realization in wide gamma of electronic devices [1,2,3,4,5,6].The importance and novelty of our work is determined basically by the technological application of the microwires. The nature of glass-coated microwires-circular symmetry, outstanding magnetic properties, and the cheap and accessible fabrication method makes them really attractive from any application’s perspectives. The basic concept of many magnetic sensors is tied up with the well-known phenomena of giant magneto-impedance [8,9,10,11,12]. Some of these applications like magnetic logic devices, random access memory, integrated circuits, hard disks, and spintronic [13,14] are fare likely rooted to a fast and controllable domain wall motion or propagation throughout magnetic bistability. Glass-coated microwires offer such existence of these two functionalities, either GMI or magnetic bistability, in a broad variety of compositions of each of two main families: Co-based or Fe-based alloys, respectively
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