Raman Intensity: An Important Tool in the Study οf Nanomaterials and Nanostructures |
| Ph. Colomban and A. Slodczyk
Laboratoire de Dynamique, Interactions et Réactivité LADIR, UMR 7075, CNRS, Université Pierre et Marie Curie Paris 6, 2 rue Dunant, 94320 Thiais, France |
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| Analysis of the relative and absolute Raman intensity is very important and powerful tool which allows to understand and characterize the modifications of the crystal/amorphous structure due to: (i) changes of the symmetry, e.g. substitution of the B site ion by the rare earth/lanthanide one and incorporation of mobile species in the case of high temperature protonic conducting perovskites; (ii) changes of the short/long range order, e.g. existence/disappearance of the nanoregions in the case of PbMg1/3Nb2/3O3-xPbTiO3 (PMN-PT) relaxor ferroelectric perovskites; (iii) changes of the nanostructure, e.g. depolymerisation of the Si-O network due to the substitution of the Si4+ ions (and associated covalent bonds) by the M+ cations (forming ionic bonds) or by the incorporation of the metal nanoprecipitates in the case of glasses, glazes and enamels. |
| DOI: 10.12693/APhysPolA.116.7 PACS numbers: 78.30.-j, 77.84.Dy, 61.43.Fs |