Pressure-induced ionic–polaronic–ionic transition in LaAlO3
文献类型：期刊论文
| 作者 | X. X. Zhao, J. Q. Cai, D. W. Jiang, M. Cao, L. Zhao and Y. H. Han |
| 刊名 | Applied Physics Letters
 |
| 出版日期 | 2023 |
| 卷号 | 122期号:26页码:5 |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/5.0155704 |
| 英文摘要 | Combining alternate-current impedance spectrum measurement and first-principle calculations, we thoroughly analyzed the electrical transport behavior of LaAlO3 under high pressure. A pressure-induced ionic-polaronic-ionic transition has been discovered through impedance spectroscopy measurements. Through first-principle calculations, we have elucidated the physical origin of the emergence of polaronic conduction, which results from the distortion of electron density background around Al and O atoms. Furthermore, the discontinuous changes in the starting frequency of ion migration f(W), relaxation frequency f(b), and ionic resistance R-i have been found at around 13.2 GPa, which can be ascribed to the phase transition of LaAlO3 from rhombohedral to cubic phase. Pressure can enhance the migration of O2- ions, causing an increase in the ionic conductivity of LaAlO3. This research will deepen our comprehension on the ion migration in solid electrolytes. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/68245]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | X. X. Zhao, J. Q. Cai, D. W. Jiang, M. Cao, L. Zhao and Y. H. Han. Pressure-induced ionic–polaronic–ionic transition in LaAlO3[J]. Applied Physics Letters,2023,122(26):5. |
| APA | X. X. Zhao, J. Q. Cai, D. W. Jiang, M. Cao, L. Zhao and Y. H. Han.(2023).Pressure-induced ionic–polaronic–ionic transition in LaAlO3.Applied Physics Letters,122(26),5. |
| MLA | X. X. Zhao, J. Q. Cai, D. W. Jiang, M. Cao, L. Zhao and Y. H. Han."Pressure-induced ionic–polaronic–ionic transition in LaAlO3".Applied Physics Letters 122.26(2023):5. |
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