Phase transition enhanced superior elasticity in freestanding single-crystalline multiferroic BiFeO3membranes

Bin Peng, Ren Ci Peng, Yong Qiang Zhang, Guohua Dong, Ziyao Zhou, Yuqing Zhou, Tao Li, Zhijie Liu, Zhenlin Luo, Shaohao Wang, Yan Xia, Ruibin Qiu, Xiaoxing Cheng, Fei Xue, Zhongqiang Hu, Wei Ren, Zuo Guang Ye, Long Qing Chen, Zhiwei Shan, Tai MinMing Liu

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


The integration of ferroic oxide thin films into advanced flexible electronics will bring multifunctionality beyond organic and metallic materials. However, it is challenging to achieve high flexibility in single-crystalline ferroic oxides that is considerable to organic or metallic materials. Here, we demonstrate the superior flexibility of freestanding single-crystalline BiFeO3 membranes, which are typical multiferroic materials with multifunctionality. They can endure cyclic 180° folding and have good recoverability, with the maximum bending strain up to 5.42% during in situ bending under scanning electron microscopy, far beyond their bulk counterparts. Such superior elasticity mainly originates from reversible rhombohedral-tetragonal phase transition, as revealed by phase-field simulations. This study suggests a general fundamental mechanism for a variety of ferroic oxides to achieve high flexibility and to work as smart materials in flexible electronics.

Original languageEnglish (US)
Article numbereaba5847
JournalScience Advances
Issue number34
StatePublished - Aug 2020

All Science Journal Classification (ASJC) codes

  • General


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