Raman spectra study on nonstoichiometric compound NaxCoO2
文献类型：期刊论文
| 作者 | J. F. Qu ; W. Wang ; Y. Chen ; G. Li ; X. G. Li |
| 刊名 | Physical Review B
 |
| 出版日期 | 2006 |
| 卷号 | 73期号:9 |
| 关键词 | electron-diffraction phase-transitions na0.5coo2 |
| ISSN号 | 1098-0121 |
| 中文摘要 | Raman spectra of NaxCoO2 (x=0.7, 0.5, and 0.3) single crystals and x=0.7 polycrystals are carefully studied. Our results demonstrate that for Na0.7CoO2, only three Raman peaks, A(1g) at 576 cm(-1), E-2g at 460 cm(-1) from the ab surface, and E-1g at 497 cm(-1) from the ac surface, can be observed at room temperature. For x=0.5, an extra E-2g peak around 430 cm(-1) appears from the ab-plane scattering, and it disappears for x=0.3. Low temperature Raman spectra from the ab plane measured down to 80 K show that with decreasing temperature, E-2g peaks around 430 cm(-1) and 415 cm(-1) appear at a low temperature for x=0.7 and 0.5, respectively. These two E-2g modes are suggested to be closely correlated with the ordering of Na ions in NaxCoO2. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34436]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. F. Qu,W. Wang,Y. Chen,et al. Raman spectra study on nonstoichiometric compound NaxCoO2[J]. Physical Review B,2006,73(9). |
| APA | J. F. Qu,W. Wang,Y. Chen,G. Li,&X. G. Li.(2006).Raman spectra study on nonstoichiometric compound NaxCoO2.Physical Review B,73(9). |
| MLA | J. F. Qu,et al."Raman spectra study on nonstoichiometric compound NaxCoO2".Physical Review B 73.9(2006). |
入库方式： OAI收割
来源：金属研究所
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