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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
Published on: April 17, 2018
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Near-edge X-ray absorption spectra for metallic Cu and Mn
Nature
|February 17, 2018
Summary
High-resolution X-ray absorption near edge structure (XANES) spectra reveal detailed local atomic structure differences in copper and manganese metals. Analysis using new multiple scattering theory confirms XANES sensitivity to atomic arrangement.
Area of Science:
- Materials Science
- Solid-State Physics
- X-ray Spectroscopy
Background:
- X-ray absorption fine structure (XAFS) includes extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES).
- Intense X-ray sources like storage rings have improved EXAFS, but XANES resolution has sometimes decreased.
- New multiple scattering theory for XANES analysis has recently been developed.
Purpose of the Study:
- To present the first high-resolution XANES spectra for copper (Cu) and manganese (Mn) metals.
- To investigate the sensitivity of XANES to subtle differences in local atomic structure.
- To analyze the obtained XANES spectra using a novel multiple scattering theoretical approach.
Main Methods:
- Acquisition of high-resolution XANES spectra for Cu and Mn at the SRS storage ring.
- Application of a new multiple scattering theoretical formalism for spectral analysis.
- Comparison of XANES spectra reflecting local atomic arrangements.
Main Results:
- High-resolution XANES spectra for Cu and Mn were successfully obtained.
- Significant differences in XANES spectra were observed between Cu and Mn.
- The new multiple scattering theory effectively analyzed the XANES spectra, correlating them with local atomic structure.
Conclusions:
- XANES is highly sensitive to the detailed local atomic structure of metals.
- The new multiple scattering theory provides a powerful tool for analyzing XANES, independent of long-range periodicity.
- This work demonstrates the capability of advanced X-ray spectroscopy techniques for probing atomic-level structural details.
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