EXAFS and XANES Studies on 3d Transition Metal Intercalation Compounds M x TiS2 |
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| Authors: | Hiroshi Negishi Saiko Negishi Minoru Sasaki Masasi Inoue Shigeo Ohara |
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| Institution: | 1. Graduate School of Advanced Sciences of Matter, Hiroshima University , Higashi-Hiroshima , 739-8526 , Japan;2. Department of Electrical and Computer Engineering , Nagoya Institute of Technology , Gokiso, Showa-ku, Nagoya , 466-8555 , Japan |
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| Abstract: | Abstract EXAFS and XANES spectra of Ti K-edge have been measured for 3d transition metal intercalation compounds M x TiS2 (M = Mn, Fe, Co and Ni; x ≤ 0.33). We have found that the interatomic distance between Ti and the first nearest neighbor S atoms, R(Ti-S), increases with the guest concentration x. The variation in XANES spectra with x reveals the reduction of the valence state of Ti atoms upon intercalation of M. From these results as well as the M K-edge EXAFS data studied previously, we have proposed a simple model on the local structure of M x TiS2 to reproduce the observed values of R(Ti-S) by averaging local shift of S atoms caused by intercalation. |
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| Keywords: | EXAFS XANES M x TiS2 local structure interatomic distance |
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