Rietveld refinements of SnO(2) ceramic powders doped with ZnO, WO(3), CoO, Nb(2)O(5) and MoO(3)
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Data
2007-01-01
Autores
Carrio, J. A. G.
Masson, T. J.
Munhoz, A. H.
de Jesus, M. M. [UNESP]
Perazolli, L. [UNESP]
Coleto, U. [UNESP]
Gutierrez-Antonio, S. [UNESP]
Marques, Rodrigo Fernando Costa [UNESP]
Paiva-Santos, C. O. [UNESP]
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Editor
Oldenbourg Verlag
Resumo
Polycrystalline materials of SnO(2) doped with ZnO, WO(3), CoO, Nb(2)O(5), and MoO(3). were synthesized by solid state reaction. X-ray powder diffraction data were collected with Cu K(alpha) radiation from a Rigaku-Rint 2000 rotating anode source. The structural and profile parameters were refined by the Rietveld method using GSAS [2]. The obtained residual parameters are R(wp) = 11,93% and R(Bragg) = 4,19%. The refined profile parameters indicate no anisotropic crystallite microstrain. The refinement results and Fourier differences calculations indicate that the dopants do not occupy interstitial sites in the crystal structure of SnO(2).
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Palavras-chave
SnO(2), varistor, Rietveld
Como citar
Zeitschrift Fur Kristallographie. Munich: Oldenbourg Verlag, p. 467-470, 2007.