doi: 10.7763/IJAPM.2011.V1.8
Structural and Electronic Parameters of Complex Niobates and Tantalates
V. V. Atuchin
1
,
S. V. Borisov
2
,
N. V. Pervukhina
2
,
Zhaoming Zhang
3
- 1 the Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russia
- 2 the Laboratory of Crystal Chemistry, Institute of Inorganic Chemistry, SB RAS, Novosibirsk, 630090, Russia
- 3 the Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
Abstract
Structural properties of anhydrous Nb<sup>5+</sup>-niobates and Ta<sup>5+</sup>-tantalates have been evaluated with the help of classic polyhedra approach and atomic net model. X-ray photoelectron spectroscopy (XPS) is utilized as a powerful method to determine the binding energy (BE) of individual atoms in the crystal lattice. Chemical bonding effects are discussed for niobates and tantalates using the binding energy differences ΔNb = (BE O 1s – BE Nb 3d<sub>5/2</sub>) and ΔTa = (BE O 1s – BE Ta 4f<sub>7/2</sub>) as key parameters to relate structural and electronic properties of the compounds with pronounced dielectric nature. Photocatalytic materials such as Sr<sub>2</sub>Nb<sub>2</sub>O<sub>7</sub>, Ta<sub>2</sub>O<sub>5</sub>, LiTaO<sub>3</sub>, and Sr<sub>2</sub>Ta<sub>2</sub>O<sub>7</sub> are considered in particular.
Keywords
- niobate;
- tantalate;
- atomic
- net;
- XPS;
- chemical
- bonding
How to Cite
V. V. Atuchin, S. V. Borisov, N. V. Pervukhina, and Zhaoming Zhang, "Structural and Electronic Parameters of Complex Niobates and Tantalates," International Journal of Applied Physics and Mathematics, vol. 1, no. 1, pp. 38-42, 2011. https://doi.org/ 10.7763/IJAPM.2011.V1.8
Copyright & License
Copyright © 2011 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).