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Micro‐Raman investigation of tin dioxide nanostructured material based on annealing effect
Author(s) -
Sangeetha P.,
Sasirekha V.,
Ramakrishnan V.
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2919
Subject(s) - raman spectroscopy , nanocrystalline material , tin dioxide , rutile , annealing (glass) , materials science , tin , nanoparticle , analytical chemistry (journal) , nanotechnology , chemical engineering , mineralogy , chemistry , optics , metallurgy , physics , engineering , chromatography
Rutile‐structured nanocrystalline tin dioxide (SnO 2 ) powder was synthesized by the chemical precipitation method using the precursor SnCl 2 • 5H 2 O. The SnO 2 powder was annealed at different temperatures, namely, 600, 800 and 1000 °C. Micro‐Raman spectra were recorded for both the as‐grown and annealed SnO 2 nanocrystalline samples. Micro‐Raman spectral measurements on the SnO 2 nanoparticle show the first‐order Raman modes A 1g (633 cm −1 ), E 1g (475 cm −1 ) and B 2g (775 cm −1 ), indicating that the grown SnO 2 belongs to the rutile structure. The first‐order A 1g mode is observed as an intense band, whereas the other two modes show low intensity. The full width at half‐maximum and band area of the Raman lines of SnO 2 nanoparticle annealed at various temperatures were calculated. The effect of high‐temperature annealing on the vibrational modes of SnO 2 was studied. The optical image of SnO 2 nanocrystalline material was used to understand the surface morphology effect. Copyright © 2011 John Wiley & Sons, Ltd.