Mechanically controllable nonlinear dielectrics

被引：25

作者：

Ko, D. L. ^{[1
]}

Tsai, M. F. ^{[1
]}

Chen, J. W. ^{[2
]}

Shao, P. W. ^{[1
]}

Tan, Y. Z. ^{[3
]}

Wang, J. J. ^{[3
]}

Ho, S. Z. ^{[2
]}

Lai, Y. H. ^{[1
]}

Chueh, Y. L. ^{[4
,5
]}

Chen, Y. C. ^{[2
]}

Tsai, D. P. ^{[6
,7
]}

Chen, L-Q ^{[3
]}

Chu, Y. H. ^{[1
,8
,9
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[2] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

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

[4] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[5] Natl Tsing Hua Univ, Frontier Res Ctr Fundamental & Appl Sci Matters, Hsinchu 30013, Taiwan

[6] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[7] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Kowloon, Hong Kong, Peoples R China

[8] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[9] Natl Chiao Tung Univ, Ctr Emergent Funct Matter Sci, Hsinchu 30010, Taiwan

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 10期

关键词：

HYDROSTATIC-PRESSURE; FERROELECTRICITY;

D O I：

10.1126/sciadv.aaz3180

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：

Strain-sensitive BaxSr1-xTiO3 perovskite systems are widely used because of their superior nonlinear dielectric behaviors. In this research, new heterostructures including paraelectric Ba0.5Sr0.5TiO3 (BSTO) and ferroelectric BaTiO3 (BTO) materials were epitaxially fabricated on flexible muscovite substrate. Through simple bending, the application of mechanical force can regulate the dielectric constant of BSTO from -77 to 36% and the channel current of BTO-based ferroelectric field effect transistor by two orders. The detailed mechanism was studied through the exploration of phase transition and determination of band structure. In addition, the phase-field simulations were implemented to provide theoretical support. This research opens a new avenue for mechanically controllable components based on high-quality oxide heteroepitaxy.

引用

页数：11

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