Deciphering the atomic-scale structural origin for large dynamic electromechanical response in lead-free Bi0.5Na0.5TiO3-based relaxor ferroelectrics

Jie Yin, Xiaoming Shi, Hong Tao, Zhi Tan, Xiang Lv, Xiangdong Ding, Jun Sun, Yang Zhang, Xingmin Zhang, Kui Yao, Jianguo Zhu, Houbing Huang, Haijun Wu (), Shujun Zhang () and Jiagang Wu ()
Additional contact information
Jie Yin: Sichuan University
Xiaoming Shi: Xi’an Jiaotong University
Hong Tao: Sichuan University
Zhi Tan: Sichuan University
Xiang Lv: Sichuan University
Xiangdong Ding: Xi’an Jiaotong University
Jun Sun: Xi’an Jiaotong University
Yang Zhang: Instrumental Analysis Center of Xi’an Jiaotong University, Xi’an Jiaotong University
Xingmin Zhang: Shanghai Institute of Applied Physics, Chinese Academy of Sciences
Kui Yao: Technology and Research (A*STAR)
Jianguo Zhu: Sichuan University
Houbing Huang: Beijing Institute of Technology
Haijun Wu: Xi’an Jiaotong University
Shujun Zhang: University of Wollongong
Jiagang Wu: Sichuan University

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Despite the extraordinary electromechanical properties of relaxor ferroelectrics, correlating their properties to underlying atomic-scale structures remains a decisive challenge for these “mess” systems. Here, taking the lead-free relaxor ferroelectric Bi0.5Na0.5TiO3-based system as an example, we decipher the atomic-scale structure and its relationship to the polar structure evolution and large dynamic electromechanical response, using the direct atomic-scale point-by-point correlation analysis. With judicious chemical modification, we demonstrate the increased defect concentration is the main driving force for deviating polarizations with high-angle walls, leading to the increased random field. Meanwhile, the main driving force for deviating polarizations with low-angle walls changes from the anti-phase oxygen octahedral tilting to the multidirectional A-O displacement, leading to the decreased anisotropy field. Benefiting from the competitive and synergetic equilibrium of anisotropic field versus random field, the facilitated polarization rotation and extension versus facilitated domain switching are identified to be responsible for the giant electromechanical response. These observations lay a foundation for understanding the “composition-structure-property” relationships in relaxor ferroelectric systems, guiding the design of functional materials for electromechanical applications.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-022-34062-6 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34062-6

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-34062-6

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().