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

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

Campinas

Encuentro; XV Brazilian Materials Research Society meeting; 2016

The Sn-K edge EXAFS spectra of Co 0.05 Sn 0.95 O 2 nanoparticles (Np) with rutile structure were collected by means of High Pressure X-Ray Absorption Spectroscopy (HP-XAS) with synchrotron radiation in a Diamond Anvil Cell (DAC). Sn-O distances were calculated from ambient pressure and up to 12 GPa. When these 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 bulk SnO 2 . It was also the same slope we obtained by performing a linear fit on Sn-O distances calculated for pure SnO 2 nanoparticles obtained by previous HP-X Ray Diffraction experiments. From this it could be concluded that doping SnO 2 nanoparticles with 5% of Co does not significantly affect its mechanical properties between the limits of assessment of our work.