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Updated: Apr 3, 2026
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Structure study on SrRu(1-x)MnxO4 using the extended X-ray absorption fine structure spectroscopy.
Long Zheng1,2, Xiaoshan Wu2
1School of Mathematics and Physics, Jiangsu University of Technology, Changzhou, Jiangsu, China.
Journal of X-Ray Science and Technology
|September 28, 2015
Summary
Structural distortions in strontium ruthenium manganese oxides were studied using Extended X-ray Absorption Fine Structure (EXAFS). Doping with manganese induced Jahn-Teller effects in the manganese-oxygen octahedra (MnO6), possibly due to valence changes.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- Layered perovskite oxides are critical materials with diverse electronic properties.
- The B-site octahedron (BO6) significantly influences the ground state properties of these oxides.
- Understanding local atomic structure is key to tuning material functionalities.
Purpose of the Study:
- To investigate the local structural environment of Mn-doped Sr2Ru(1-x)MnxO4.
- To determine the impact of Mn doping on the MnO6 octahedra.
- To explore potential correlations between structural distortions and chemical valence.
Main Methods:
- Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy was employed.
- EXAFS analysis focused on the local atomic structure around the Ru and Mn sites.
- Data interpretation considered coordination environments and bond lengths.
Main Results:
- EXAFS data revealed significant structural distortions around the doped Mn atoms.
- Evidence suggests a Jahn-Teller effect within the MnO6 octahedra.
- The observed distortions are potentially linked to a change in the chemical valence of Mn.
Conclusions:
- Mn doping in Sr2RuO4 induces notable local structural distortions.
- The Jahn-Teller effect in MnO6 octahedra is a likely consequence of doping.
- Further investigation into valence states is warranted to fully understand the observed phenomena.
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