Super-elastic ferroelectric single-crystal membrane with continuous electric dipole rotation

Guohua Dong, Suzhi Li, Mouteng Yao, Ziyao Zhou, Yong Qiang Zhang, Xu Han, Zhenlin Luo, Junxiang Yao, Bin Peng, Zhongqiang Hu, Houbing Huang, Tingting Jia, Jiangyu Li, Wei Ren, Zuo Guang Ye, Xiangdong Ding, Jun Sun, Ce Wen Nan, Long Qing Chen, Ju LiMing Liu

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Ferroelectrics are usually inflexible oxides that undergo brittle deformation. We synthesized freestanding single-crystalline ferroelectric barium titanate (BaTiO3) membranes with a damage-free lifting-off process. Our BaTiO3 membranes can undergo a ~180° folding during an in situ bending test, demonstrating a super-elasticity and ultraflexibility. We found that the origin of the super-elasticity was from the dynamic evolution of ferroelectric nanodomains. High stresses modulate the energy landscape markedly and allow the dipoles to rotate continuously between the a and c nanodomains. A continuous transition zone is formed to accommodate the variant strain and avoid high mismatch stress that usually causes fracture. The phenomenon should be possible in other ferroelectrics systems through domain engineering. The ultraflexible epitaxial ferroelectric membranes could enable many applications such as flexible sensors, memories, and electronic skins.

Original languageEnglish (US)
Pages (from-to)475-479
Number of pages5
JournalScience
Volume366
Issue number6464
DOIs
StatePublished - Oct 25 2019

All Science Journal Classification (ASJC) codes

  • General

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