Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 613, Issue -, Pages 146-152Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.06.012
Keywords
Oxide ion conductor; Crystal Structures; FTIR spectra; Raman spectra
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Funding
- DST Inspire program
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Structure and vibrational properties of La2-xBixMo2O9 (0.05 <= x <= 0.4) have been studied using X-ray diffraction, infrared spectra as well as Raman spectra. It has been found that Bi doped samples have cubic symmetry with space group P2(1)3. The structure and lattice parameters of La2-xBixMo2O9 (0.05 <= x <= 0.4) are obtained from Rietveld refinement. The distorted nature of MoO4 tetrahedra is confirmed by bondvalence sums calculation. The effect of Bi lone pair is also confirmed by difference Fourier maps. From infrared and Raman analysis it is confirmed that different vibration modes arise from the vibration of molybdenum-oxygen bands. Mo-O bond lengths are also found to be independent of Bi-doping. (C) 2014 Elsevier B.V. All rights reserved.
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