Abstract
Cs K-edge extended X-ray absorption fine structure (EXAFS) spectra of Na2CsC60 are measured in order to determine the local structure around the Cs+ ion. The structural change accompanied by the order-disorder phase transition at 299 K is investigated in detail on the basis of the EXAFS spectra at 20, 295 and 317 K. It has been confirmed that Na2CsC60 takes a face-centered-cubic structure at 317 K, while it takes a simple-cubic structure at 20 and 295 K. It has also been found that the Cs+ ion at the octahedral site is not located out-of-center of the octahedral site but is located on the center.
Original language | English |
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Pages (from-to) | 5-11 |
Number of pages | 7 |
Journal | Physica C: Superconductivity and its applications |
Volume | 249 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Jul 1 1995 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering