Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
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Iron nanoparticles in amorphous SiO2: X-ray emission and absorption spectraKurmaev, E. Z.; Zatsepin, D. A.; Cholakh, S. O.; Schmidt, B.; Harada, Y.; Tokushima, T.; Osawa, H.; Shin, S.; Takeuchi, T.
The local structure of the chemical bond of iron ions implanted into SiO2 glasses (implantation energy, 100 keV; fluence, 1 x 10(16) cm(-2)) is investigated using x-ray emission and absorption spectroscopy. The Fe L x-ray emission and absorption spectra are analyzed by comparing them with the corresponding spectra of reference samples. It is established that iron nanoparticles implanted into the SiO2 vitreous matrix are in an oxidized state. The assumption is made that the most probable mechanism of transformation of iron nanoparticles into an oxidized state during implantation involves the breaking of Si-O-Si bonds with the formation of Si-Si and Fe-O bonds.
Keywords: Nanoparticles, ion implantation, X-ray absorption and emission spectroscopy
- Physics of The Solid State 47(2005)4, 754-757