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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
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上傳時間: | 2012-09-10T06:15:18Z
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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 |
顯示於類別: | [物理學系] 會議論文
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