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Schlagwörter:
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Zusammenfassung:
The strontium niobate compounds Sr4Nb2O9 and Sr5Nb4O15 were prepared by
solid state reactions and studied by high-resolution X-ray powder
diffraction measurements. The structures of the two systems Sr4Nb4O15
and Sr5Nb4O15 were obtained by Rietveld analysis, indicating triclinic
and monoclinic unit cell parameters, respectively. Both structures
reveal a layering of Sr-O planes. The Nb ions are located in octahedral
holes between the Sr-O layers.