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Raman scattering features of lead pyroantimonate compounds. Part I: XRD and Raman characterization of Pb 2 Sb 2 O 7 doped with tin and zinc
Author(s) -
Rosi F.,
Manuali V.,
Miliani C.,
Brunetti B. G.,
Sgamellotti A.,
Grygar T.,
Hradil D.
Publication year - 2009
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.2092
Subject(s) - raman spectroscopy , raman scattering , tin , doping , analytical chemistry (journal) , antimony , zinc , x ray crystallography , chemistry , crystallography , diffraction , materials science , inorganic chemistry , optics , physics , organic chemistry , optoelectronics
Yellow pyroantimonates PbSb, PbSbSn and PbSbZn were synthesized by solid‐state reactions at high temperature and characterized by X‐ray diffraction and Raman spectroscopy. The lattice size of cubic pyrochlores increases with Sn and Zn doping and with Pb overstoichiometry, indicating the replacement of Sb 5+ by the larger cations. This fact permits the understanding of the corresponding Raman spectral modifications as a consequence of the changes in the local symmetry of the SbO polyhedra, justifying the exploitation of Raman spectroscopy to noninvasively identify structural modifications of pyroantimonate pigments in artworks. Copyright © 2008 John Wiley & Sons, Ltd.