Local atomic structure of niobates and titanates from X-ray absorption spectroscopic data

R. Vedrinskiǐ, V. Kraǐzman, M. Lemeshko, E. Nazarenko, A. Novakovich, L. Reznichenko, V. Fokin, V. Shuvaeva, in:, Springer, 2009, pp. 1394–1398.

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Abstract
The local atomic structure of PbTiO3, BaTiO3, and KNbO3 perovskite-type crystals and K x Na1 − x NbO3 solid solutions in different phases is investigated using the angular dependence of the pre-edge structure of the Ti and Nb K X-ray absorption spectra and the EXAFS data. In noncubic phases, a considerable deviation of the local structure from the structure determined from diffraction data is observed only for the tetragonal phase of the BaTiO3 crystal. It is revealed that, in the cubic phase of niobates, the niobium atoms are characterized by significant displacements from the centrosymmetric positions along the threefold axes, so that they are close in the magnitude and the direction to the displacements in the low-temperatures rhombohedral phases.
Publishing Year
Date Published
2009-07-12
Acknowledgement
This study was supported by the Russian Founda*tion for Basic Research (project no. 07*02*00796a).
Volume
51
Issue
7
Page
1394 - 1398
Conference
CoPoF: 18th All-Russia Conference on Physics of Ferroelectrics (VKS-XVIII)
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Vedrinskiǐ R, Kraǐzman V, Lemeshko M, et al. Local atomic structure of niobates and titanates from X-ray absorption spectroscopic data. In: Vol 51. Springer; 2009:1394-1398. doi:10.1134/S106378340907018X
Vedrinskiǐ, R., Kraǐzman, V., Lemeshko, M., Nazarenko, E., Novakovich, A., Reznichenko, L., … Shuvaeva, V. (2009). Local atomic structure of niobates and titanates from X-ray absorption spectroscopic data (Vol. 51, pp. 1394–1398). Presented at the CoPoF: 18th All-Russia Conference on Physics of Ferroelectrics (VKS-XVIII), Springer. https://doi.org/10.1134/S106378340907018X
Vedrinskiǐ, Rostislav, V. Kraǐzman, Mikhail Lemeshko, Elena Nazarenko, Alexander Novakovich, Larisa Reznichenko, Vladimir Fokin, and Victoria Shuvaeva. “Local Atomic Structure of Niobates and Titanates from X-Ray Absorption Spectroscopic Data,” 51:1394–98. Springer, 2009. https://doi.org/10.1134/S106378340907018X.
R. Vedrinskiǐ et al., “Local atomic structure of niobates and titanates from X-ray absorption spectroscopic data,” presented at the CoPoF: 18th All-Russia Conference on Physics of Ferroelectrics (VKS-XVIII), 2009, vol. 51, no. 7, pp. 1394–1398.
Vedrinskiǐ R, Kraǐzman V, Lemeshko M, Nazarenko E, Novakovich A, Reznichenko L, Fokin V, Shuvaeva V. 2009. Local atomic structure of niobates and titanates from X-ray absorption spectroscopic data. CoPoF: 18th All-Russia Conference on Physics of Ferroelectrics (VKS-XVIII) vol. 51. 1394–1398.
Vedrinskiǐ, Rostislav, et al. Local Atomic Structure of Niobates and Titanates from X-Ray Absorption Spectroscopic Data. Vol. 51, no. 7, Springer, 2009, pp. 1394–98, doi:10.1134/S106378340907018X.

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