In-situ high-pressure X-ray diffraction study on the influence of the dopant element in the elastic properties of SnO2 nanoparticles

S. FERRARI; F. GRINBLAT; V. BILOVOL; D. ERRANDONEA; L. G. PAMPILLO; C. POPESCU

Río de Janeiro

Conferencia; 27th International Conference On High Pressure Science And Technology (AIRAPT); 2019

In this work we present a comparison of the elastic properties of tin dioxide (undoped and doped withdifferent transition metals) nanoparticles obtained by co-precipitation technique. The samples withstoichiometry SnO2 [1], Sn0.95V0.05O2 [2], Sn0.95Co0.05 and Sn0.9Fe0.1O2 [1] were subjected to HighPressure in a Diamond Anvil Cell (DAC) and studied by in-situ X-ray diffraction, being LNLS (Brazil) orALBA (Spain) the synchrotrons used as the source of the X-ray radiation. The analysis of the X-raypatterns acquired at different pressures allowed the evaluation of axial and volume compressibility of thementioned samples. We find that Co-doped tin dioxide is the less compressible one, with the lowest linearcompressibilities (Ka = 1.723 x10-3 GPa-1 and Kc = 0.783 x 10-3 GPa-1 ) values and the highest bulkmodulus (B0 = 2276 GPa) which is 13% bigger than the one obtained for the undoped sample.