SoMoPro (Arregi): Ultrafast dynamics and control of functional metamagnetic mesoscale devices (2017-2019)
SoMoPro (Uhlíř): Tuneable magnetic materials based on heterostructures featuring a first-order magnetic phase transition (2016-2019), TUNAMAG
SoMoPro = The South Moravian Programme for Distinguished Researchers
The project has acquired the financial contribution from the EU Framework Programme for Research and Innovation Horizon 2020 within the scope of the Marie Skłodowska-Curie Actions co-financed by the South Moravian Region according to the Grant Agreement n. 665860.
Magnetic materials constitute highly tunable material systems that have been associated with a wide range of new scientific discoveries. Coupled order parameters in complex phase-transition materials can be controlled using various driving forces such as temperature, magnetic and electric field, strain, spin-polarized currents and optical pulses. Tuning the material properties to achieve efficient transitions would enable fast and low-power electronic devices and novel functionality at nanometer length scales. We propose to explore the first-order magnetic phase transition in materials that have been subjected to strong spatial confinement. Initially we will focus on materials featuring the temperature- or field-induced metamagnetic transition from the antiferromagnetic order to ferromagnetic order close to room temperature, specifically metamagnetic alloys (e.g. FeRh) and manganites. By combining magnetic imaging with electrical transport measurements we will investigate the origin of the intriguing asymmetry in the transition character upon heating and cooling which has been recently revealed. The comparison of different metamagnetic materials targets finding universal behaviour of this material class. Furthermore, the character of the collective phase transition in films patterned into arrays of nanostructures will be compared to continuous films by magnetometry measurements and magnetic imaging and the possibility of tailoiring the collective transition by specific patterns will be assessed. The results of this project might be applied in various fields ranging from spintronics, magnetic recording, and plasmonics to magnetic refrigeration and biosensing, which is in line with the priority areas of the Smart Specialisation Strategy (S3) of the South Moravian Region.
It reflects only the author’s views, the Union is not liable for any use that may be made of the information contained therein.)
Junior GAČR (Uhlíř): Controlling the magnetic phase transition in spatially confined structures (2016-2018), project No. 16-23940Y
GACR = Grant Agency of the Czech Republic