(a) X-ray diffraction patterns as-synthesized and annealed SnO2. (b)Williamson-Hall plots for measured XRD data of SnO2 powders.
(a), (b) TEM micrographs, (c) HRTEM and (d) SAED pattern (shown inset) of TO sample, and (e) TEM micrograph and (f) HRTEM and (g) SAED pattern (shown inset) of TO800 samples.
Raman spectra of as synthesized and annealed SnO2 powders.
Comparison of room temperature PL spectra of (a) TO and (b) TO800. (The band to band transition in TO800 has been marked by red arrow.)
Comparison of XPS spectra of TO and TO800 powders showing (a)Survey spectrum, (b) Sn 3d core level spectra, (c) O 1s core level spectra.
(a) M Vs. H curves of as-synthesized and annealed SnO2 samples at room temperature. (b) ZFC and FC curves of as synthesized SnO2 sample at 500 Oe, from 4 K to 300 K.
(a) Comparison of actual temperature dependence of magnetization of TO sample with simulated data. (b) Comparison of M-H loops TO samples at 300 K and 10 K.
Room temperature EPR spectra of TO, TO400, TO600, and TO800.
Variation of saturation magnetization and EPR signal intensity (in terms of signal height) in as prepared and samples annealed at different temperatures.
Comparison of crystallite size and strain values calculated using Williamson-Hall equation.
Effect of annealing on peak positions in Raman spectra of as synthesized and annealed SnO2 powders.
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