Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films

Luo, Zhenlin1,2; Chen, Zuhuang3; Yang, Yuanjun1,2; Liu, Heng-Jui4; Huang, Chuanwei3; Huang, Haoliang1,2; Wang, Haibo1,2; Yang, Meng-Meng1,2; Hu, Chuansheng1,2; Pan, Guoqiang5; Wen, Wen6; Li, Xiaolong6; He, Qing6; Sritharan, Thirumany3; Chu, Ying-Hao4; Chen, Lang3,7; Gao, Chen1,2

2013-08-26

10.1103/PhysRevB.88.064103

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

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.

SCI ; EI

英语

其他

Ministry of Education[MOE-ATU 101W961]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000323572900006

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Univ Sci & Technol China, Dept Mat Sci & Engn, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
3.Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
4.Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan
5.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China
6.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
7.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China

Luo, Zhenlin,Chen, Zuhuang,Yang, Yuanjun,et al. Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films[J]. PHYSICAL REVIEW B,2013,88(6).

Luo, Zhenlin.,Chen, Zuhuang.,Yang, Yuanjun.,Liu, Heng-Jui.,Huang, Chuanwei.,...&Gao, Chen.(2013).Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films.PHYSICAL REVIEW B,88(6).

Luo, Zhenlin,et al."Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films".PHYSICAL REVIEW B 88.6(2013).