Structure dynamics of strongly reduced epitaxial BaTiO3-x studied by Raman scattering
文献类型：期刊论文
| 作者 | Guo, HZ ; Chen, ZH ; Cheng, BL ; Lu, HB ; Liu, LF ; Zhou, Y |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2005 |
| 卷号 | 25期号:12页码:2347 |
| 关键词 | MOLECULAR-BEAM-EPITAXY PULSED-LASER DEPOSITION TITANATE THIN-FILMS FORCE MICROSCOPY SPECTRA TEMPERATURE OXYGEN SPECTROSCOPY GROWTH MODES |
| ISSN号 | 0955-2219 |
| 通讯作者 | Chen, ZH (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 10008, Peoples R China. |
| 中文摘要 | Raman scattering technique was used to study structure dynamics of strongly reduced epitaxial barium titanate (BaTiO3-x) thin films grown on MgO (1 0 0) substrates by laser molecular beam epitaxy under different oxygen pressures from 10(-2) to 10(-5) Pa. X-ray diffraction and asymmetric rocking curves indicate that lattice parameters c and c/a ratio increase, and a slightly decreases with decreasing oxygen pressure, indicating increased lattice volume of BaTiO3-x thin film. Raman spectra confirm that BaTiO3-x thin films are in tetragonal phase with some deviated features, which maybe origin from tensile strain at film-substrate interface due to lattice parameter mismatch. Moreover, two weak peaks in Raman spectra of BaTiO2.52 thin film grown under 3.0 x 10(-5) Pa may be induced by second-order two-phonon processes. Raman peaks shift towards lower frequencies with decreasing oxygen pressure during deposition, suggesting a decrease of the stress in BaTiO3-x thin films. In the meantime, Raman peaks become broadened, which may be attributed to higher degree of structural disorder in strongly reduced BaTiO3-x lattice structure. (c) 2005 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/53571]  |
| 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 | Guo, HZ,Chen, ZH,Cheng, BL,et al. Structure dynamics of strongly reduced epitaxial BaTiO3-x studied by Raman scattering[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2005,25(12):2347. |
| APA | Guo, HZ,Chen, ZH,Cheng, BL,Lu, HB,Liu, LF,&Zhou, Y.(2005).Structure dynamics of strongly reduced epitaxial BaTiO3-x studied by Raman scattering.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,25(12),2347. |
| MLA | Guo, HZ,et al."Structure dynamics of strongly reduced epitaxial BaTiO3-x studied by Raman scattering".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 25.12(2005):2347. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。