The structural evolution of FeCo-SiO2 xerogel and aerogel nanocomposite samples during their sol-gel preparation have been studied by EXAFS (extended X-ray absorption fine structure) technique. Depending on the precursors of the alloy nanoparticles different intermediate are formed which have a strong influence on the formation of the FeCo alloy of the desired composition. The porous structure also plays an important role.
An EXAFS study on iron-cobalt-silica nanocomposite materials prepared by the sol-gel method
CASULA, MARIA FRANCESCA;CORRIAS, ANNA;NAVARRA, GABRIELE
2003-01-01
Abstract
The structural evolution of FeCo-SiO2 xerogel and aerogel nanocomposite samples during their sol-gel preparation have been studied by EXAFS (extended X-ray absorption fine structure) technique. Depending on the precursors of the alloy nanoparticles different intermediate are formed which have a strong influence on the formation of the FeCo alloy of the desired composition. The porous structure also plays an important role.
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