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題名: Effects of Water Intercalation in NaxCoO2�yH2O
作者: Lin, J. Y.;Chen, Y. L.;Hsu, Ben;Liu, Chia-Jyi;Tai, Y. L.;Hsieh, C. A.;Lee, J. F.
貢獻者: 物理學系
日期: 2009
上傳時間: 2012-09-10T06:15:18Z
出版者: IOP Publishing Ltd
摘要: Water intercalation is necessary for the occurrence of superconductivity in
NaxCoO2 � yH2O. It is known that water insertion leads to the elongation of the c-axis. Beyond
that, it remains controversial about the effects of water intercalation on the electronic structure
of NaxCoO2 � yH2O. In this paper, we report the Co-K edge spectroscopy on y=0.7 and 1.4
samples, respectively. The spectra are compared with those of the reference samples. It is
found that the variation of the Co valence can not be explained by the simple electron counting.
These results are consistent with those of the previous chemical titration.
關聯: 25th International Conference on Low Temperature Physics (LT25) Journal of Physics: Conference Series, 150: 052138
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