Local order in aqueous solutions of lanthanum chloride and bromide by x-ray diffraction, EXAFS and Raman spectroscopy

2001 ◽  
Vol 13 (20) ◽  
pp. 4367-4385 ◽  
Author(s):  
M Alves Marques ◽  
M I Cabaço ◽  
M I de Barros Marques ◽  
A M Gaspar ◽  
C M de Morais
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Solutions ◽  
Lanthanum Chloride ◽  
Local Order ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals The structure of concentrated aqueous solutions of chromium nitrate and cerium chloride studied by X-ray diffraction and Raman spectroscopy

2007 ◽  
Vol 136 (3) ◽  
pp. 323-330 ◽  
Author(s):  
M. Isabel Cabaço ◽  
M.I. de Barros Marques ◽  
A.M. Gaspar ◽  
M. Alves Marques ◽  
M. Margarida Costa
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Solutions ◽  
Cerium Chloride ◽  
Chromium Nitrate ◽  
X Ray Diffraction ◽  
Concentrated Aqueous Solutions ◽  
X Ray

Raman and luminescence spectroscopy study of europium doped zirconia

2008 ◽  
Vol 23 (7) ◽  
pp. 1854-1861 ◽  
Author(s):  
James Ovenstone ◽  
Robert Withnall ◽  
Jack Silver
Keyword(s):  
Raman Spectroscopy ◽  
Strong Influence ◽  
Synthesis Method ◽  
Emission Spectra ◽  
Luminescence Spectroscopy ◽  
Local Order ◽  
Spectroscopy Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Europium Concentration

A Raman spectrometer was used to probe the structure and luminescence of a range of europium-doped zirconia phosphors prepared by different routes. We have demonstrated that the synthesis method and precursor type have a strong influence on the structure and luminescence of the final phosphor product. Raman spectroscopy has also demonstrated the presence of local order around the dopant ions that is not apparent in x-ray diffraction (XRD) and corresponds with changes in luminescence. As europium concentration is increased from 1 mol% to 20 mol%, the long range structure (from XRD) changes from tetragonal to cubic. Raman spectroscopy, however, shows that the 1 mol% material has a localized structure similar to the monoclinic undoped zirconia. This localized symmetry can explain the differences observed previously in emission spectra.

Structure of rhodium(III) nitrate aqueous solutions. An investigation by x-ray diffraction and Raman spectroscopy

1986 ◽  
Vol 90 (2) ◽  
pp. 238-243 ◽  
Author(s):  
R. Caminiti ◽  
D. Atzei ◽  
P. Cucca ◽  
A. Anedda ◽  
G. Bongiovanni
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Solutions ◽  
X Ray Diffraction ◽  
X Ray

X-ray diffraction and Raman spectroscopy investigations in concentrated aqueous solutions of yttrium and strontium nitrates

2005 ◽  
Vol 117 (1-3) ◽  
pp. 69-76 ◽  
Author(s):  
M. Isabel Cabaço ◽  
M.I. de Barros Marques ◽  
M. Alves Marques ◽  
A.M. Gaspar ◽  
M.L. de Almeida
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Solutions ◽  
X Ray Diffraction ◽  
Concentrated Aqueous Solutions ◽  
X Ray

Raman spectroscopy and X-ray diffraction of lithium niobate at temperatures up to 1300○-4.80pt○C

2005 ◽  
Vol 126 ◽  
pp. 101-105 ◽  
Author(s):  
B. Moulin ◽  
L. Hennet ◽  
D. Thiaudière ◽  
P. Melin ◽  
P. Simon
Keyword(s):  
Raman Spectroscopy ◽  
Lithium Niobate ◽  
X Ray Diffraction ◽  
X Ray
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