期刊論文
| 學年 | 98 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2010-06-01 |
| 作品名稱 | XANES Spectroscopic Studies of the Phase Transition in Gd2Zr2O7 |
| 作品名稱（其他語言） | |
| 著者 | 李攸軒;陳錦明;李志甫;高惠春 |
| 單位 | 淡江大學化學學系 |
| 出版者 | 臺北市：中國化學學會 |
| 著錄名稱、卷期、頁數 | Journal of the Chinese Chemical Society=中國化學會會誌 56(3), pp.543-548 |
| 摘要 | The structuralphase transition fromfluorite to pyrochloreand thestrength of thecoordination bond of Zr-O in Gd2Zr2O7 were investigated by XANES spectra of both O and Zr K-edge. The energy difference of the O K-edge absorption spectra at 532 and 536 eV was assigned to the crystal field splitting energy of the 4d orbital (E4d, t2g and eg) of the Zr ion. Also, in the samples prepared at higher temperatures, the 536 eV peak moves slightly to higher energy, whereas the absorption energy of 532 eV peak does not shift. A correlation between E4d and the strength of interaction between Zr (4d) and O (2p) orbitals has been found. Furthermore, two Zr K-edge absorptions at 18020 and 18030 eV of Gd2Zr2O7 have been observed; the splitting energy (E), peak intensity ratio (I18030/I18020), and FWHM of the first derivative of the absorption curve depend on the preparation temperatures. The effect of crystal symmetry and Zr-O bonding character on the XANES spectral profile was discussed. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0009-4536 |
| 期刊性質 | 國內 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50378 ) |