TY - JOUR
T1 - An EXAFS study on the local structure in the Na2CsC60 superconductor
AU - Fujimoto, T.
AU - Kubozono, Y.
AU - Maeda, H.
AU - Ishida, H.
AU - Furukawa, Y.
AU - Kashino, S.
AU - Yamazaki, H.
N1 - Funding Information:
The authors would like to thank I. Hirosawa of Fundamental Research Laboratories, NEC Corporation for providing Na2CsC60(B) and K. Oshima for his helpful discussion. We would like to express our thanks to S. Kishimoto and T. Usami of the Photon Factory (KEK) for their kind assistance and hospitality. This work has been performed under a proposal of Photon Factory Program Advisory Committee (Proposal No. 93G178) and supported by the Grant-in-Aid (06224220) from the Ministry of Education, Science and Culture, Japan.
PY - 1995/7/1
Y1 - 1995/7/1
N2 - 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.
AB - 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.
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U2 - 10.1016/0921-4534(95)00274-X
DO - 10.1016/0921-4534(95)00274-X
M3 - Article
AN - SCOPUS:0029336198
VL - 249
SP - 5
EP - 11
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -