| 查看: 686 | 回复: 1 | |||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | |||
[交流]
帮忙修改语法错误（修改请标出)
|
|||
| Raman scattering was used to characterize the crystals. Room temperature Raman spectra for the as-grown and annealed wafer are shown in Fig. 3 a and Fig. 3 b, respectively. The spectra presented the typical bands corresponding to the normal vibration modes of XXX [22]. The maximum phonon energy of this crystal is 905 cm-1, which can be indexed to Nb-O stretching band. Linewidths (FWHM) for the line at 905 cm-1 of the as-grown and annealed wafers were fitted to be 8.2 and 6.8 cm-1, as shown in the insets of Fig. 3 a and Fig. 3 b, respectively. In the as-grown crystal, the dark brown color could be attributed to the partial reduction of Nb5+ ions, which are mainly source from the XXX octahedron [17, 23]. It resulted in the change of the X-X stretching vibration, so that the band at 905 cm-1 broadened. The broadening of the Raman band at 905 cm-1 are mainly caused by the oxygen vacancies. After annealing, the oxidation state of X ions was in the same X+5 and X-X stretching vibration was more uniform, which resulted in a higher degree of order on the Nb and Mg sublattices [17]. Therefore, the color of the annealed crystal faded to light brownish and the linewideth at 905 cm-1 was narrowed. It indicates that the oxygen vacancies of the as-grown crystal can be eliminated by the annealing process in the oxygen atmosphere. |
回复此楼» 猜你喜欢
我面上完蛋了
已经有10人回复
-
能否退出参与的面上项目解除限项
已经有24人回复
-
filecode，4个jtjc了
已经有17人回复
-
人气不行了
已经有9人回复
-
没有任何消息-是不是就凉了
已经有6人回复
-
如果此刻你正在为国基感到焦虑，不妨来听听这首《基金之外》
已经有5人回复
-
2026国自然函评费到账
已经有19人回复
-
建议基金发布提前给出明确的时间点
已经有16人回复
-
今日不放榜？网传国自然预计 8 月 27 日可查结果
已经有21人回复
-
估计是周四
已经有4人回复
ll921(金币+20, 翻译EPI+1): 2011-03-02 08:42:36
| Raman scattering was used to characterize the crystals. （at）Room temperature Raman spectra for the as-grown and annealed wafer （were）shown in Fig. 3 a and Fig. 3 b, respectively. The spectra presented the typical bands corresponding to the normal vibration modes of XXX [22]. The maximum phonon energy of this crystal is 905 cm-1, which can be indexed to Nb-O stretching band. Linewidths (FWHM) for the line at 905 cm-1 of the as-grown and annealed wafers were fitted to be 8.2 and 6.8 cm-1, as shown in the insets of Fig. 3 a and Fig. 3 b, respectively. In the as-grown crystal, the dark brown color could be attributed to the partial reduction of Nb5+ ions, which were mainly source from the XXX octahedron [17, 23]. It resulted in the change of the X-X stretching vibration, so that the band at 905 cm-1 broadened. The broadening of the Raman band at 905 cm-1 are mainly (due to) the oxygen vacancies. After annealing, the oxidation state of X ions was in the same X+5 and X-X stretching vibration was more uniform, which resulted in a higher degree of order on the Nb and Mg sublattices [17]. Therefore, the color of the annealed crystal faded to light brownish and the linewideth at 905 cm-1 was narrowed. It (indicateed) that the oxygen vacancies of the as-grown crystal (could) be eliminated by the annealing process in the oxygen atmosphere. |
2楼2011-02-27 08:24:25
20