Speaker
Description
Metallic glasses are still attracting the interest of researchers namely for their very good soft
magnetic properties. With the aim to enhance their practical applications, new compositions
are continuously scrutinized. Here, we present Mössbauer spectrometry study of a novel
Fe 51 Co 12 Si 16 B 8 Mo 5 P 8 metallic glass prepared in a form of ribbons by conventional method of
planar flow casting. Samples in as-quenched state as well as after annealing at selected
temperatures were investigated.
Mössbauer spectrometry is one of few analytical tools that can describe disordered amorphous
systems. This can be done via hyperfine interactions between nuclei and electron shells which
sensitively probe local short-range order arrangement. Experiments performed in a broad
range of temperatures provide information on the evolution of microstructure. This is
reflected by continuous modification of the hyperfine interactions from magnetic dipole
towards electric quadrupole ones. Eventually, the Curie temperature of the investigated
metallic glass can be established.
This work was supported by the grants VEGA 1/0130/20, APVV-16-0079 and by the
European Regional Development Fund-Project "Center for Advanced Applied Sciences" No.
CZ.02.1.01/0.0/0.0/16_019/0000778.
