标题: | Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films |
作者: | Luo, Zhenlin Chen, Zuhuang Yang, Yuanjun Liu, Heng-Jui Huang, Chuanwei Huang, Haoliang Wang, Haibo Yang, Meng-Meng Hu, Chuansheng Pan, Guoqiang Wen, Wen Li, Xiaolong He, Qing Sritharan, Thirumany Chu, Ying-Hao Chen, Lang Gao, Chen 材料科学与工程学系 Department of Materials Science and Engineering |
公开日期: | 26-八月-2013 |
摘要: | We present a synchrotron grazing incidence x-ray diffraction analysis of the domain structure and polar symmetry of highly strained BiFeO3 (BFO) thin films grown on LaAlO3 substrate. We reveal the existence of periodic elastic nanodomains in the pure tetragonal-like BFO ultrathin films down to a thickness of 6 nm. A unique shear strain-accommodation mechanism is disclosed. We further demonstrate that the periodicity of the nanodomains increases with film thickness but deviates from the classical square root law in the ultrathin thickness regime (6-30 nm). Temperature-dependent experiments further reveal the disappearance of periodic modulation above similar to 90 degrees C due to a M-C-M-A structural phase transition. |
URI: | http://dx.doi.org/10.1103/PhysRevB.88.064103 http://hdl.handle.net/11536/22543 |
ISSN: | 1098-0121 |
DOI: | 10.1103/PhysRevB.88.064103 |
期刊: | PHYSICAL REVIEW B |
Volume: | 88 |
Issue: | 6 |
起始页: | 0 |
结束页: | 0 |
显示于类别: | Articles |
文件中的档案:
If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.