Effect of High Pressure on pure and Co-doped tin dioxide nanoparticles

FERRARI S.; PAMPILLO L; GRINBLAT F.; ERRANDONEA D.; BILOVOL V.; SACCONE F.D.

Campinas

Encuentro; XV Brazilian MRS Meeting; 2016

The Brazilian Materials Research Society

The Sn-K edge EXAFS spectra of Co0.05Sn0.95O2 nanoparticles (Np) with rutile structure were collected by means of High Pressure X-Ray AbsorptionSpectroscopy (HP-XAS) with synchrotron radiation in a Diamond Anvil Cell (DAC). Sn-O distances were calculated from ambient pressure and up to 12 GPa. Whenthese Sn-O distances were adjusted with a linear regresion, its slope was the same compared to the one reported by Haines et. al [1] for the rutile structure of bulkSnO2. It was also the same slope we obtained by performing a linear fit on Sn-O distances calculated for pure SnO2 nanoparticles obtained by previous HP-X RayDiffraction experiments. From this it could be concluded that doping SnO2 nanoparticles with 5% of Co does not significantly affect its mechanical properties between the limits of assessment of our work.