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Iron nanoparticles in amorphous SiO |
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| Authors: | É. Z. Kurmaev D. A. Zatsepin S. O. Cholakh B. Schmidt Y. Harada T. Tokushima H. Osawa S. Shin T. Takeuchi |
| Affiliation: | (1) Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russia;(2) Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russia;(3) Research Center Rossendorf, Institute of Ion Beam Physics and Materials Research, Dresden, D-01314, Germany;(4) Harima Institute, Hyogo 679-5138, Japan;(5) Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan;(6) Tokyo University of Science, Chiba 162-8601, Japan |
| Abstract: | The local structure of the chemical bond of iron ions implanted into SiO2 glasses (implantation energy, 100 keV; fluence, 1 × 1016 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. |
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