Effect of particle size and strain in nanocrystalline SnO2 according to doping concentration of ruthenium

X-ray diffraction studies of nanocrystalline Ru-doped SnO2 reveal that concentration of Ru governs particle size as well as strain such as tensile or compressive form. The texture coefficient values of all the samples, indexed to a tetragonal lattice, exhibit (211) as the preferred orientation. The lowering of d-values in 0.2 wt% Ru-doped SnO2 suggests existence of the compressive strain, while shift of d-value to the higher side in 0.3 or above wt% Ru can be attributed to the transformation of compressive strain into the tensile form. The results indicate that expansion in the cell volume generates tensile strain by surpassing the compressive strain.

Figure optionsDownload as PowerPoint slide