期刊
JOURNAL OF RAMAN SPECTROSCOPY
卷 40, 期 1, 页码 107-111出版社
WILEY
DOI: 10.1002/jrs.2092
关键词
XRD; Raman spectroscopy; cubic pyrochlores; lead antimonate yellow; Naples yellow
类别
Yellow pyroantimonates Pb-Sb, Pb-Sb-Sn and Pb-Sb-Zn 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 Sri and Zn doping and with Pb overstoichiometry, indicating the replacement of Sb5+ 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 Sb-O polyhedra, justifying the exploitation of Raman spectroscopy to noninvasively identify structural modifications of pyroantimonate pigments in artworks. Copyright (c) 2008 John Wiley & Sons, Ltd.
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