Role of step edges in oxygen vacancy transport into SrTiO3(001)
文献类型：期刊论文
| 作者 | Zhu, XD ; Fei, YY ; Lu, HB ; Yang, GZ |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2005 |
| 卷号 | 87期号:5 |
| 关键词 | PULSED-LASER DEPOSITION SINGLE-CRYSTAL SRTIO3 OXIDATION-KINETICS DOPED SRTIO3 SURFACE GROWTH DIFFRACTION HOMOEPITAXY DIFFUSION IRON |
| ISSN号 | 0003-6951 |
| 通讯作者 | Zhu, XD (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. |
| 中文摘要 | Using a combination of oblique-incidence optical reflectivity difference and specular reflection high energy electron diffraction techniques, we studied vacuum annealing of pulsed-laser deposited Nb-doped SrTiO3 monolayers on SrTiO3(100) near 730 degrees C. In oxygen-free ambient, the as-grown monolayers are oxygen deficient. The excess oxygen vacancies in the monolayers are reduced by vacancy diffusion into the bulk. We found that the reduction rate is characterized by an activation energy E=1.0 eV. More interestingly, the pre-exponential factor decreases significantly as the annealing time interval increases between two successive monolayer depositions. We propose that the indiffusion of excess surface oxygen vacancies takes place at step edges, and the Oswald ripening governs the density of the latter during vacuum annealing. (c) 2005 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52234]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhu, XD,Fei, YY,Lu, HB,et al. Role of step edges in oxygen vacancy transport into SrTiO3(001)[J]. APPLIED PHYSICS LETTERS,2005,87(5). |
| APA | Zhu, XD,Fei, YY,Lu, HB,&Yang, GZ.(2005).Role of step edges in oxygen vacancy transport into SrTiO3(001).APPLIED PHYSICS LETTERS,87(5). |
| MLA | Zhu, XD,et al."Role of step edges in oxygen vacancy transport into SrTiO3(001)".APPLIED PHYSICS LETTERS 87.5(2005). |
入库方式： OAI收割
来源：物理研究所
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