Journal
JOURNAL OF APPLIED PHYSICS
Volume 93, Issue 3, Pages 1760-1763Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1534903
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Rutile structured SnO2 nanobelts have been synthesized from the mixture of Sri powders and SiO2 nanoparticle powders. Each nanobelt has a uniform width of about several hundred nanometers and a thickness of about tens of nanometers along its entire length. Micro-Raman spectrum measurement on the SnO2 nanobelts shows that the first-order Raman A(1g) mode (632.9 cm(-1)) is very strong, and two weak Raman bands 498 and 694 cm(-1) seem to correspond to infrared (IR)-active longitudinal optical (LO) and transverse optical (TO) of A(2u) modes. In addition, the IR spectrum of the SnO2 nanobelts shows the A(2u) (LO) (701.9 cm(-1)) and E-u(1) (TO) (634.5 cm(-1)) modes and one surface mode (565.2 cm(-1)). The IR-active bands in the Raman spectrum and the surface mode in IR spectrum, which may be due to the nanoscale morphology of the nanobelts. (C) 2003 American Institute of Physics. [DOI: 10.1063/1.1534903].
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