C-6 Characterization of X-ray Powder Diffraction Data of BaxSr1−xSo4 (0≤x≤1) by Rietveld Refinement

2010 ◽  
Vol 25 (2) ◽  
pp. 217-217
Author(s):  
S. R. Zaidi ◽  
H. Sitepu ◽  
S. Shen ◽  
N. Al-Yami
Keyword(s):  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Powder Diffraction Data ◽  
X Ray

X-ray powder diffraction characterization of disilver trihydrogen paraperiodate

2006 ◽  
Vol 21 (1) ◽  
pp. 52-55
Author(s):  
Norberto Masciocchi ◽  
Davide Gianni
Keyword(s):  
Hydrogen Bonds ◽  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Two Dimensional ◽  
Powder Diffraction Data ◽  
X Ray ◽  
Cell Parameters ◽  
Full Profile

X-ray powder diffraction data for the trigonal form of disilver trihydrogen paraperiodate, Ag2H3IO6, are reported. The cell parameters are a=5.941 89(3), c=12.7253(1) Å, V=389.089(6) Å3, and ρ=5.65 g cm−3 for Z=3. A full-profile Rietveld refinement confirms the monophasic nature of the sample and the presence of two-dimensional corrugated layers of the A2BO6 type linked by hydrogen bonds. Short unsupported Ag–Ag contacts (about 3.02 Å) of the argentophilic type are also shown.

Rietveld Refinement of the BaTiO3 from X-Ray Powder Diffraction

2009 ◽  
Vol 79-82 ◽  
pp. 593-596
Author(s):  
Feng Sun ◽  
Yan Sheng Yin
Keyword(s):  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Rietveld Method ◽  
Structural Parameters ◽  
Ferroelectric Ceramic ◽  
Powder Diffraction Data ◽  
Ceramic Powders ◽  
Space Group ◽  
X Ray

The ferroelectric ceramic BaTiO3 was synthesized at 1000 °C for 5 h. The structure of the system under study was refined on the basis of X-ray powder diffraction data using the Rietveld method. The system crystallizes in the space group P4mm（99）. The refinement of instrumental and structural parameters led to reliable values for the Rp, Rwp and Rexp.We use the TOPAS software of Bruker AXS to refine this ceramic powders and show its conformation

New X-ray powder diffraction data and Rietveld refinement for Gd 2 O 3 monodispersed fine spherical particles

2003 ◽  
Vol 171 (1-2) ◽  
pp. 420-423 ◽  
Author(s):  
Ana Maria Pires ◽  
Marian Rosaly Davolos ◽  
Carlos O. Paiva-Santos ◽  
Elizabeth Berwerth Stucchi ◽  
Juliana Flor
Keyword(s):  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Spherical Particles ◽  
Powder Diffraction Data ◽  
X Ray

A powder diffraction study of MIBaIn2(PO4)3 (MI=Na, K, Cs) with a langbeinite-type structure

2002 ◽  
Vol 17 (1) ◽  
pp. 1-6 ◽  
Author(s):  
D. Louër ◽  
V. Moise ◽  
M. Liégeois-Duyckaerts ◽  
A. Rulmont
Keyword(s):  
Diffraction Study ◽  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Type Structure ◽  
Monochromatic Radiation ◽  
Powder Diffraction Data ◽  
Asymmetric Unit ◽  
X Ray ◽  
Cell Parameters

Three phosphates, MIBaIn2(PO4)3 with MI=Na, K, Cs, isostructural to the langbeinite structure, have been studied from powder diffraction data collected with monochromatic radiation obtained from a conventional X-ray source. Precise powder data are reported, as well as cell parameters, i.e., a=10.026 08(9) Å, a=10.121 57(13) Å and a=10.226 94(9) Å for MI=Na, K and Cs, respectively. A Rietveld refinement has been carried out (space group P213), with final RF factors, 0.061, 0.041 and 0.027, and Rwp factors, 0.196, 0.142 and 0.129, for MI=Na, K and Cs, respectively. There are two octahedrally coordinated In3+ ions in the asymmetric unit and the final refinements suggest disorder on the two sites of the MI/Ba sublattice.

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