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REX2000 Version 2.5: Improved DATA Handling and Enhanced User-Interface
XAFS analysis can be applied to various fields such as material science, environmental study, biological science, etc. and is widely used for characterization in those fields. In the early days that X...
XAFS analysis can be applied to various fields such as material science, environmental study, biological science, etc. and is widely used for characterization in those fields. In the early days that X...
The First and Second Shell Correlation Analysis in Cu Metal by the Matched EXAFS PDF Projection Method
Through numerical simulation of inverse problem computation, our new method of EXAFS analysis was tested for a simple structure of copper metal. For a simulation test, we constructed a structural mode...
Through numerical simulation of inverse problem computation, our new method of EXAFS analysis was tested for a simple structure of copper metal. For a simulation test, we constructed a structural mode...
Solving a Historical Puzzle
AIP Conf. Proc. -- February 2, 2007 -- Volume 882, pp. 165-167
X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference;
doi:10.1063/1.2644463
Issue Date: 2 February 2007
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M. Groves,* E. A. Stern,* G. Seidler,* and M. Balasubramanian![[dagger]](http://scitation.aip.org/stockgif3/dagger-script.gif)
*Department of Physics, University of Washington, Seattle, WA 98195
Advance Photon Source, Argonne National Laboratory, Argonne, IL 60439
*Department of Physics, University of Washington, Seattle, WA 98195
Advance Photon Source, Argonne National Laboratory, Argonne, IL 60439
We report x-ray absorption near edge structure (XANES) measurements of four closely related perovskite materials: SrTiO3, CaTiO3, CaZrO3, and SrZrO3. This data is used to address the conceptually important, early EXAFS experiment of Perel and Deslattes. That experiment attempted to distinguish between the then-competing short-range and long-range theories of EXAFS by cross-material comparison of the EXAFS for the metal ions in the four perovskites reported here. Their inconclusive result is surprising, given the modern understanding of EXAFS. Our new measurements show strong disagreements with the prior results at multiple edges. When analyzed in qualitative, conceptual framework of the original study, our new results are in strong agreement with the short-range order theory. This solves a historical puzzle in the early scientific development of x-ray absorption spectroscopy. ©2007 American Institute of Physics
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