Temperature dependence surface structure of BaTiO(3) thin films induced by ferroelectric phase transition
文献类型：期刊论文
| 作者 | Li, XL ; Lu, HB ; Li, M ; Mai, ZH ; Kim, HJ |
| 刊名 | JOURNAL OF APPLIED PHYSICS
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| 出版日期 | 2008 |
| 卷号 | 103期号:5 |
| ISSN号 | 0021-8979 |
| 中文摘要 | Surface structure of BaTiO(3) (BTO) films grown on SrTiO(3) substrates was investigated as a function of temperature. X-ray reflectivity results show that there exists a low-density surface layer of 15 A due to surface relaxation on top of the BTO films in addition to a physical adsorbed water layer of about 5 A at 25 degrees C. The water layer disappeared at 70 degrees C; however, the surface layer remains its thickness until 115 degrees C. At 140 degrees C, the thickness of the surface layer decreases to 12 A and the electron density increases to a value near to that of the underneath BTO layer. The results of differential scanning calorimetry and the temperature dependence measurement of the lattice parameters convinced that the ferroelectric phase transition of the BTO films takes place around 135 degrees C (similar to 130 degrees C for bulk BTO). This indicates that the ferroelectric phase transition would contribute to the structural change of the surface layer due to the removal of the depolarization field. Our results indicate that the ferroelectric polarization strongly influences the surface structure of BTO films. (c) 2008 American Institute of Physics. |
| 收录类别 | SCI |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44785]  |
| 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 | Li, XL,Lu, HB,Li, M,et al. Temperature dependence surface structure of BaTiO(3) thin films induced by ferroelectric phase transition[J]. JOURNAL OF APPLIED PHYSICS,2008,103(5). |
| APA | Li, XL,Lu, HB,Li, M,Mai, ZH,&Kim, HJ.(2008).Temperature dependence surface structure of BaTiO(3) thin films induced by ferroelectric phase transition.JOURNAL OF APPLIED PHYSICS,103(5). |
| MLA | Li, XL,et al."Temperature dependence surface structure of BaTiO(3) thin films induced by ferroelectric phase transition".JOURNAL OF APPLIED PHYSICS 103.5(2008). |
入库方式： OAI收割
来源：物理研究所
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