Fe2O3/TiO2 nanoparticles—a complex structural study (CROSBI ID 213932)
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Podaci o odgovornosti
Valeš, Vaclav ; Buljan, Maja ; Janicki, Vesna ; Bernstorff, Sigrid ; Mangold, S. ; Siketić, Zdravko ; Schneeweiss, O. ; Holý, Vaclav ;
engleski
Fe2O3/TiO2 nanoparticles—a complex structural study
We report on the structure and arrangement of particles created in the Fe2O3/TiO2 + SiO2 multilayers. X-ray diffraction and extended X-ray absorption fine structure spectroscopy reveal the presence of crystalline rutile-TiO2 while the iron oxide remains either amorphous or forms very small clusters of Fe2O3. The Fe3 + oxidation state of iron atoms has been confirmed by Mössbauer and X-ray spectroscopy. The degree of the particle ordering has been studied by grazing-incidence small-angle X-ray scattering. It was demonstrated that with increasing temperature partially ordered nanoparticles are created and grow up to a critical temperature when the ordering is destroyed. Both particle sizes and inter-particle distances depend strongly on the thickness of the Ti/Fe containing layer.
Fe2O3; TiO2; GISAXS; nanoparticles
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