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Powder diffraction data for the three-layer Aurivillius ceramics Bi2Sr2−xAxNb2TiO12(A=Ca,Ba,x=0,0.5,1)
Published online by Cambridge University Press: 01 March 2012
Abstract
Powder diffraction data for five three-layer Aurivillius ceramics of the form Bi2Sr2−xAxNb2TiO12 (A=Ca,Ba,x=0,0.5,1) have been determined from specimens that were characterized using both X-ray and neutron diffraction. Full Rietveld analysis demonstrated that the crystals were all tetragonal (space group I4∕mmm, #139), with highly aniostropic layered structures with lattice parameters on the order of a=3.9 Å and c=33 Å, and densities on the order of 7 g∕cm3
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