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

被引：396

作者：

Dong, Guohua ^{[1
]}

Li, Suzhi ^{[2
]}

Yao, Mouteng ^{[1
]}

Zhou, Ziyao ^{[1
]}

Zhang, Yong-Qiang ^{[3
,4
]}

Han, Xu ^{[5
,6
]}

Luo, Zhenlin ^{[5
,6
]}

Yao, Junxiang ^{[7
]}

Peng, Bin ^{[1
]}

Hu, Zhongqiang ^{[1
]}

Huang, Houbing ^{[8
]}

Jia, Tingting ^{[7
]}

Li, Jiangyu ^{[7
]}

Ren, Wei ^{[1
]}

Ye, Zuo-Guang ^{[9
,10
]}

Ding, Xiangdong ^{[2
]}

Sun, Jun ^{[2
]}

Nan, Ce-Wen ^{[11
]}

Chen, Long-Qing ^{[12
]}

Li, Ju ^{[13
]}

Liu, Ming ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Int Joint Lab Micro Nano Manufacture & Measuremen, State Key Lab Mech Behav Mat,Elect Mat Res Lab, Key Lab,Minist Educ,Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Ctr Adv Mat Performance Nanoscale CAMPNano, Xian 710049, Shaanxi, Peoples R China

[4] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, HARCC, Xian 710049, Shaanxi, Peoples R China

[5] Univ Sci & Technol China, Dept Phys, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[6] Univ Sci & Technol China, Dept Phys, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

[7] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Nanobiomech, Shenzhen 518055, Peoples R China

[8] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

[9] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada

[10] Simon Fraser Univ, 4D LABS, Burnaby, BC V5A 1S6, Canada

[11] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[12] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[13] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

来源：

SCIENCE | 2019年 / 366卷 / 6464期

基金：

国家重点研发计划; 加拿大自然科学与工程研究理事会;

关键词：

SHAPE-MEMORY ALLOYS; ENERGY; FILMS; POLARIZATION; SYSTEMS;

D O I：

10.1126/science.aay7221

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 similar to 180 degrees 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.

引用

页码：475 / +

页数：43

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