Deconvolution of 3d transition metal L‐edge EXAFS and magnetic EXAFS signals

• Published in: Review of Scientific Instruments 1996-09, Vol.67 (9), p.3365-3365
• Main Authors: Kemner, K. M., Chakarian, V., Idzerda, Y. U., Elam, W. T.
• Format: Article
• Language: English
• ISSN: 0034-6748; 1089-7623
• DOI: 10.1063/1.1147359

Due to the closely overlapping L‐edge EXAFS regions for the ferromagnetic 3d metals, their analyses have not generally been attempted. Similarly, although analysis of L‐edge magnetic EXAFS (MEXAFS) is desirable because of the enhanced amplitude of the signal compared to K‐edge MEXAFS, such experiments on the ferromagnetic 3d metals have also not been attempted. In order to address this problem, we describe the use of an iterative Van Cittert deconvolution approach to isolate the LIII‐edge from the LII‐edge EXAFS and MEXAFS signals for Fe, Co and Ni thin films. The deconvoluted LIII‐edge EXAFS data are in agreement with theoretically generated LIII‐edge data, thus demonstrating the validity of this approach. Results from the deconvolution of the MEXAFS data also qualitatively agree with previously published MEXAFS data on the same elements at the K‐edge. The results for the Fe EXAFS and MEXAFS data will be presented here.