Ultrasound Experiments
Ultrasound is a powerful tool to investigate phase-transitions in solids and liquids. As it is a thermodynamic quantity it can be interpreted simílar as e.g. specific heat, but in addition it yields information on symmetry.
We use
- bulk ultrasound in the frequency range from 1MHz to about 100 MHZ
- Surface Acoustic Waves from 20MHz to 1 GHZ and
- low frequeny oscillations from about 1mHz to 1 kHz for internal friction experiments.
Projects
- Determination of elastic moduli of novel materials
- Determination of defect-type and defect-density in novel materials by Internal Friction
- Phase transitions related to the metal-insulator transitions in Vanadates
- sound induced and sound-modified catalysis
- sound induced motion of magnetic vortices in superconductors

