Soft magnetic properties of Fe(Cu,Nb) SiB alloys evidenced by Mossbauer experiments in radio frequency magnetic fields

摘要

Conventional (transmission) Mossbauer effect investigations on alloys exhibiting a nanostructure deliver valuable information about the alloys' micro structure. The application of a radio frequency (rf) magnetic field parallel to the absorber plain causes the Mossbauer effect to become a very sensitive tool for detecting soft magnetic properties. These features are due to two effects, the appearing of sidebands in the spectra and the collapse of the spectrum. We demonstrate the abilities of this measurement method comparing well-known results about coercivity with the information content of the Mossbauer spectra collected at different compositions of the Fe(Cu,Nb) SiB alloys.