Giant Mechanical Strain Induced by a Magnetic Field
The aim of the event is to introduce attendees, through an expert lecture and a seminar, to the phenomenon of giant mechanical strain (deformation) induced by a magnetic field in magnetically active materials. It explains the fundamental physical mechanisms and the factors influencing the magnitude and reversibility of this effect. Attention is also given to experimental results and potential applications in actuators and smart systems.
Actuators based on magnetic microwires
The aim of the event is to introduce attendees, through an expert lecture and a seminar, to miniaturized actuators based on magnetic Ni-Fe-Ga microwires. Their importance is growing with current developments in robotics, optics, biomedicine, and precision engineering in general. These microactuators, which use shape-memory alloys, offer a repeatable relative elongation of up to 12% and a tunable transition temperature between -170 °C and 400 °C. Their long-term lifetime exceeds 9×10⁶ cycles, and they withstand a repeatable stress of 100 MPa.
Sensoric and magnetometry 2025
The aim of the conference is to exchange information on research and development in the field of magnetic materials, magnetometry, and sensor technology. The conference is thematically focused on the research of new magnetic materials, the study of physical properties and applications of magnetic microwires, magnetic measurements, research and development of sensors and measurement systems, sensor testing and calibration, applications of magnetometry in various practical fields, as well as UAVs and their sensor systems.
Phase Transformations in Austenitic Steels and Their Monitoring through Barkhausen Noise
The lecture presents research in the field of Barkhausen noise in austenitic steels, where martensite is formed through deformation processes. This phase transformation is also associated with the transition from a paramagnetic phase to a ferromagnetic one. Regarding plastic deformation, processes such as simple tension, dynamic strengthening of materials, rolling, friction, as well as long-term combined loading of a ship propeller are presented. The presentation highlights the importance of exchange interaction between individual martensitic regions, as well as the dominant influence of the amount of deformation-induced martensite on Barkhausen noise.
Study of the Structure of Chemically Gradient Thin Films
Thin films prepared with a compositional gradient represent a materials library suitable for studying structure formation and measuring material properties across a wide range of chemical compositions. The motivation for obtaining the structural composition of the materials library is the applicability of the thin film on a polyimide substrate for flexible electronics. Structural analysis was carried out using photon diffraction in transmission mode at the synchrotron radiation source on beamline ID-22 at ESRF, with micro-focusing of the beam to 0.5 x 0.5 mm² to ensure local characterization.
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