Magnetic Response of Amorphous Magnetic Microsprings

Amorphous magnetic alloys are now widely used in electronics, electrical engineering, robotics, sensors, etc. They are mainly used in the form of wires, tapes and foils. The technology of manufacturing products from amorphous magnetic alloys is constantly improving and new methods are being implemented. In our work, microspirals (microsprings) made from amorphous microwires are studied. Measurements of hysteresis loops for different types of microspirals have been carried out and the relationship between the hysteresis anisotropy and the parameters of the spirals is discussed. Special attention is given to the study of the magnetic impedance. It is found that the field dependence of the impedance of microspirals is asymmetric, and the sign of the asymmetry is related to the chirality of the spirals. The possibility of using amorphous magnetic microspirals for the development of sensor and microrobotic elements is discussed.