Metastable and Nanostructured Materials


In our department, nanoparticles are preferably prepared from the gas phase by inert gas condensation. This provides particles with clean, uncovered surfaces. In addition to the mere investigation of size-related phenomena, this allows us to also study the influence of the particle surfaces on their morphology, structure and properties. Here, state-of-the-art aberration-corrected transmission electron microscopy is an indispensable tool for atomic resolution structural characterization.

If needed, the particles can be subjected to in-flight optical heating in a light furnace in order to promote their thermal equilibration. Both the particles' thermodynamic phase stability as well as the kinetics of the phase formation in these nanoscopic objects are of vital scientific interest to the group. The following materials systems and topics have been under investigation:

  • Magnetic nanoparticles: Fe-Pt, Fe-Ni, Fe@Au, Nd-Fe-B

    • Size dependent magnetic properties.
    • Phase stability and kinetics of phase formation.
    • Segregation phenomena.
    • L10 ordering.
    • Oxidation.

  • Nonmagnetic nanoparticles: Au, Pt, Cu-Au.

  • Particle – substrate interactions: FePt@S-layers.

  • Artificial pinning centers in HTSC films: HfO@YBCO

    • Embedment of IGC particles in High-TC superconductor thin films.
    • Tailoring of pinning forces.

  • Nanoparticles for hydrogen storage: MgH2, AlH3.

  • Nanoparticles for improved implant – tissue contacts: Au@TiNb.

    • Particle-mediated improvement of cell-metal contact.


Department Info

Dr. Bernd Rellinghaus

Phone: +49-351-4659-754
Fax: +49-351-4659-9754
Email: b.rellinghaus(@t)