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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
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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

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References

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