Moessbauer Spectroscopy Group

The main object of the research conducted in the Laboratory of Mössbauer Spectroscopy concerns investigation of various physical properties of technologically important alloys and compounds. The current topic concentrates on experimental and theoretical study of the properties of a sigma-phase in Fe-Cr, Fe-V and Co-Cr alloy systems such as: dynamic (Phonon density of states, Debye temperature), magnetic (Curie temperature, magnetization, hyperfine field, susceptibility), electronic (charge-density, electric field gradient) and structural (site occupancy), using various experimental techniques (Mössbauer Spectroscopy, Nuclear Magnetic Resonance, Neutron Diffraction, Magnetometry, Synchrotron Radiation). The most interesting results recently obtained include: fabrication and characterization of the magnetically strongest sigma-phase Fe-V alloy ever reported, determination of a sublattice magnetism on V atoms in sigma-phase Fe-V samples, calculation of the electronic structure in paramagnetic sigma-phase Fe-V alloys, and measurement and calculation of a phonon density of states in a sigma-phase Fe-Cr alloy.

Additional interest includes use of the Mössbauer Spectroscopy in the investigation of Fe-containing samples of organic or/and pharmaceutical origin or application (like ferritin, antianemic medicaments etc).