No abstract

Structural and magnetic properties of amorphous and partly crystallized Fe 73.5-x Ce x=0,3,5,7 Si 13.5 B 9 Nb 3 Cu 1 alloys, were analysed in the temperature ranging from RT to 800°C with scanning calorimetry and magnetometry. The Fe(Si) and Fe(B) structures were identified and characterised with set of crystallization temperatures and activation energies. Also, Curie temperatures for amorphous and for crystalline structures were determined and analysed as functions of Ce content.

In this work the characteristic radiation, emitted during interaction of medium energy (200 keV) ambient heavy ions (Ar) with Fe4Co66Si12B14Nb1Mo2Cu1 (VV-6025X) amorphous alloy, was measured in grazing incident-exit angle geometry and in time sequence, in order to determine dynamics of formation of subsurface region, damaged through implantation, sputtering and interface mixing. It was shown that structure and composition of surface is unstable against heavy ions irradiation due to preferential sputtering and implantation of ions, and recoils, and that the dynamics of such modication can be monitored in-situ with particle induced X-ray emission (PIXE) method.