A5010179862- Magnetic properties of thin films
- Metallic Glasses and Amorphous Alloys
- Magnetic Properties and Applications
- Magnetic Properties of Alloys
- Nonlinear Dynamics and Pattern Formation
- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- Lattice Boltzmann Simulation Studies
- Theoretical and Computational Physics
- Magnetic confinement fusion research
- Nonlinear Photonic Systems
- Magneto-Optical Properties and Applications
- Electromagnetic Effects on Materials
- Advanced MEMS and NEMS Technologies
- Non-Destructive Testing Techniques
- Magnetic and Electromagnetic Effects
- Characterization and Applications of Magnetic Nanoparticles
- Photonic Crystals and Applications
- Magnetic Field Sensors Techniques
- Photonic and Optical Devices
- Gyrotron and Vacuum Electronics Research
- Quantum and electron transport phenomena
- Advanced Battery Materials and Technologies
Technical University of Košice
2013-2024
Circular magnetization reversal in cylindrical amorphous wire Co72.5Si12.5B15 with negative magnetostriction constant under applied tensile stress was investigated. Hysteresis loops of axial and circular magnetic flux showed presence helical anisotropy slight deviation from the direction. studied using rectangular electric current pulses. Critical (circular field) which did not change application long pulses experimentally determined. If a single boundary (domain wall) between domains...
The process of release a single domain wall from the closure structure at microwire ends and nucleation reversed in regions far were studied using technique that consists determining critical parameters rectangular magnetic field pulse (magnitude-H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">pc</sub> length- xmlns:xlink="http://www.w3.org/1999/xlink">τc</sub> ) needed for free production. Since these processes can be influenced by magnitude...
A new experiment allowing the study of static domain boundary dimensions in bistable microwire is proposed.In this a created by an inhomogeneous axial magnetic field.The changes flux due to presence were measured along using two pick-up coils.Experimental results compared with simple theoretical model.For Fe77.5Si7.5B15microwire total diameter 30 µm and metal nucleus 15 µm, good agreement between experimental data was obtained for dimension about 200 times larger than wire metallic core.
A small-angle magnetization rotation (SAMR) experiment carried out on a single piece of glass-coated microwire is presented.The specific conditions this are discussed.The cylindrical shape the with small cross-sectional area means that transverse AC magnetic field relatively high frequency created by an electric current flowing through has to be used.It shown provides opportunity determine magnetoelastic anisotropy and corresponding axial mechanical stress in metallic core wire.The...
Domain wall velocity versus applied magnetic field was measured at different temperatures in a glass-coated Fe77.5Si15B7.5 microwire. Measurement of velocities under four conditions confirmed the presence unidirectional effect domain propagation. The experimental results are interpreted using an elastic model. This explains non-linearity dependences as well shape transformation low region, and finally provides additional reason why decreases with decreasing temperature.
The advantageous applications of magnetic bistable microwires have emerged during long-lasting research. They a wide range in the scientific sphere or technical practice. can be used for various applications, including memories, biomedicine, and sensors. This manuscript is focused on last-mentioned application microwires—sensors—discussing digital signal processing techniques practical applications. Thanks to highly sensitive properties their two stable states magnetization, it possible...
The presented experimental method enables the study of dynamics a domain wall (DW) moving in bistable microwire region rapidly changing magnetic field. DW velocity versus position dependence is obtained this experiment. Measurements were carried out on Fe77.5Si15B7.5 with strong unidirectional effect propagation. propagating forced to change its parameters very short time, which results increasing above equilibrium value after passes rapid increase In order interpret observed behavior,...
A new experimental method for studying single domain wall (DW) dynamics in bistable microwires is presented. It provides possibilities to study the of a moving region rapidly-changing magnetic field. When DW forced change its parameters very short time, corresponding changes velocity are different rapid increase and decrease field strength. Experimental v(x) dependences compared with theoretical ones which correspond case when moves no inertial effects, or has enough time adapt it moves. The...