Raman scattering study of rutile SnO2 nanobelts synthesized by thermal evaporation of Sn powders

The Raman spectrum of single-crystalline rutile tin dioxide (SnO2) nanobelts synthesized by thermal evaporation of tin powders was studied. Three Raman shifts (474, 632, 774 cm−1) showed the typical feature of the rutile phase of the as-synthesized SnO2 nanobelts. It was found that two infrared (IR)-active modes (313 and 690 cm−1) appeared in Raman spectrum and some peaks were broadened.