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Ames Laboratory Conference Papers, Posters, and Presentations

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On The Temperature Dependence Of Multiple- And Single-Scattering Contributions In Magnetic Exafs, H. Wende, F. Wilhelm, P. Poulopoulos, K. Baberschke, J. W. Freeland, Y. U. Idzerda, A. Rogalev, Deborah L. Schlagel, Thomas A. Lograsso, D. Arvanitis Sep 1999

On The Temperature Dependence Of Multiple- And Single-Scattering Contributions In Magnetic Exafs, H. Wende, F. Wilhelm, P. Poulopoulos, K. Baberschke, J. W. Freeland, Y. U. Idzerda, A. Rogalev, Deborah L. Schlagel, Thomas A. Lograsso, D. Arvanitis

Ames Laboratory Conference Papers, Posters, and Presentations

We demonstrate that the temperature dependence of structural as well as magnetic fluctuations can be probed by the use of the Magnetic Extended X-ray Absorption Fine Structure (MEXAFS) spectroscopy. We compare those to the dynamic disorder as probed by the EXAFS. Here we present temperature-dependent MEXAFS investigations carried out at the L-edges of a thin Fe film and a Gd single crystal. By comparing the experimental results to ab initio calculations the single-scattering contributions are separated from multiple-scattering contributions. It is found that the multiple-scattering contributions are enhanced for the MEXAFS compared to the normal EXAFS.