Magnetic materials are ubiquitous in current electronics, sensors and power systems. Their high tunability offers a multitude of new approaches to non-volatile data storage, high-speed information transfer, energy recovery, drug delivery and sensing. Understanding the dynamics and fundamental phenomena in nanomagnets is crucial for finding ways in which electronic and magnetic order can be efficiently controlled using the least energy possible.

The research is carried out in two closely collaborating groups:

- Nanomagnetism and Spintronics group at CEITEC
- CEITEC Nano

Highlights

June 1, 2024: [New publications] Unveiling the ultrafast structural dynamics of FeRh

In collaboration with the University of Postdam, and by using time-resolved X-ray diffraction, we investigate the fundamental timescale of domain nucleation processes during the laser-induced phase transition in FeRh. We also find ways to accelerate the transition by taking advantage of plasmonic absorption effects in nanostructured FeRh.

New publications:

• Speed limits of the laser-induced phase transition in FeRh
• Accelerating the Laser-Induced Phase Transition in Nanostructured FeRh via Plasmonic Absorption

19 May 2023: New publications (field concentrators, magnonics, FeRh)

Multiple articles have been published recently on various topics - magnetic field concentrators, magnonics, and FeRh metamagnets:

• Microscale metasurfaces for on‐chip magnetic flux concentration
• Observing high-k magnons with Mie-resonance-enhanced Brillouin light scattering
• Phase-resolved optical characterization of nanoscale spin waves
• Propagating spin-wave spectroscopy in a liquid-phase epitaxial nanometer-thick YIG film at millikelvin temperatures
• Magnetic-field-controlled growth of magnetoelastic phase domains in FeRh

31 January 2023: FeRh nanoislands paper published

Preserving Metamagnetism in Self-Assembled FeRh Nanomagnets , ACS Applied Materials & Interfaces 15 (6), 8653-8665 (2023). Link, also on arXiv.

Keywords : Self-assembly, FeRh, Solid-state dewetting, Metamagnetism, Antiferromagnetism, Supercooling

Subjects:  Dewetting, Magnetic properties, Nanoparticles, Phase transitions, Surface energy.

5 October 2022 : MetaMagIC project meeting in Liège

Within the CHIST-ERA project MetaMagIC, we took part in the project workshop at University of Liège. Jan Hajduček presented our results on TEM magnetic imaging of flux concentrators on SiN membranes. 

MetaMagIC project logo	Our team at Liège-Guillemins	MetaMagIC project members

Winter hike 2024