Nondestructive assessment of the grain size distribution of SnO2 nanoparticles by low-frequency Raman spectroscopy
- 6 October 1997
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 71 (14) , 1957-1959
- https://doi.org/10.1063/1.119754
Abstract
A nondestructive methodology is reported to obtain the grain size distribution of SnO2 nanoparticles, with grain sizes below 10 nm, using low-frequency Raman scattering measurements. The position of the main low-frequency Raman bands depends on the grain size and can be correlated with the spheroidal vibration modes of a spherical elastic body with “rigid” boundaries. The grain size distributions deduced from Raman scattering are in agreement with the direct measurements from transmission electron microscopy, especially for the smaller grains.Keywords
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