Hostname: page-component-745bb68f8f-s22k5 Total loading time: 0 Render date: 2025-02-08T22:55:18.792Z Has data issue: false hasContentIssue false
  • English
  • Français

Pre-edge peak of Ti K XANES: Determined by Short- or Medium-Range Structure?

Published online by Cambridge University Press:  01 February 2011

Nan Jiang
Nan Jiang*
Affiliation:
nan.jiang@asu.edu, Arizona State University, Physics, Tempe, Arizona, United States
Get access

Abstract

The calculations of Ti K-edge X-ray absorption near-edge structures (XANES) in fresnoite Sr2TiSi2O8 are carried out using multiple-scattering method. The origins of the pre-edge peak along with the fine structures in the main peak of Ti K-edge XANES are interpreted by comparing the calculations in various modified structure models. It concludes that the pre-edge peak is dominantly determined by the structure (including both coordination and bond lengths) within the nearest-neighbor distance, while the fine structures beyond the pre-edge peak region are sensitively determined by the structure extending to the medium-range distance

Keywords

Ticrystallographic structureabsorption
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1152: Symposium TT – Local Structure and Dynamics in Amorphous Systems , 2008 , 1152-TT01-06
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Waychunas, G., American Mineralogist 72, 89 (1987).Google Scholar
2. Farges, F., Brown, G. E., and Rehr, J. J., Phys. Rev. B 56, 1809 (1997).Google Scholar
3. Jiang, N., Su, D., and Spence, J. C. H., Phys. Rev. B 76, 214117 (2007).Google Scholar
4. Jiang, N., Su, D., and Spence, J. C. H., Ultramicroscopy 109, 122 (2008).Google Scholar
5. Rehr, J. J. and Albers, R. C., Rev. Mod. Phys. 72, 621 (2000).Google Scholar
6. Bianconi, A., Dell'Ariccia, M., Durham, P. J., and Pendry, P. J., Phys. Rev. B 26, 6502 (1982).Google Scholar
7. Ankudinov, A. L., Ravel, B., Rehr, J. J., and Conradson, S. D., Phy. Rev. B 58, 7565 (1998).Google Scholar
8. Höche, T., Neumann, W., Esmaeilzadeh, S., Uecker, R., Lentzen, M., and Rüssel, C., J. Solid State Chemistry 166, 15 (2002).Google Scholar
9. Miyajima, H., Miyawaki, R., and Ito, K., European J. Mineralogy 14 (2002) 1119.Google Scholar