Formation of Head/Tail-to-Body Charged Domain Walls by Mechanical Stress

Simple item page
dc.contributor.authorHuang, Q.
dc.contributor.authorYang, J.
dc.contributor.authorChen, Z.
dc.contributor.authorChen, Y.
dc.contributor.authorCabral, M.J.
dc.contributor.authorLuo, H.
dc.contributor.authorLi, F.
dc.contributor.authorZhang, S.
dc.contributor.authorLi, Y.
dc.contributor.authorXie, Z.
dc.contributor.authorHuang, H.
dc.contributor.authorMai, Y.-W.
dc.contributor.authorRinger, S.P.
dc.contributor.authorLiu, S.
dc.contributor.authorLiao, X.
dc.date.issued2022
dc.description.abstractDomain walls (DWs) in ferroelectric materials are interfaces that separate domains with different polarizations. Charged domain walls (CDWs) and neutral domain walls are commonly classified depending on the charge state at the DWs. CDWs are particularly attractive as they are configurable elements, which can enhance field susceptibility and enable functionalities such as conductance control. However, it is difficult to achieve CDWs in practice. Here, we demonstrate that applying mechanical stress is a robust and reproducible approach to generate CDWs. By mechanical compression, CDWs with a head/tail-to-body configuration were introduced in ultrathin BaTiO3, which was revealed by in-situ transmission electron microscopy. Finite element analysis shows strong strain fluctuation in ultrathin BaTiO3 under compressive mechanical stress. Molecular dynamics simulations suggest that the strain fluctuation is a critical factor in forming CDWs. This study provides insight into ferroelectric DWs and opens a pathway to creating CDWs in ferroelectric materials.
dc.description.statementofresponsibilityQianwei Huang, Jiyuan Yang, Zibin Chen, Yujie Chen, Matthew J. Cabral, Haosu Luo, Fei Li, Shujun Zhang, Yulan Li, Zonghan Xie, Houbing Huang, Yiu-Wing Mai, Simon P. Ringer, Shi Liu, and Xiaozhou Liao
dc.identifier.citationACS applied materials & interfaces, 2022; 15(1):2313-2318
dc.identifier.doi10.1021/acsami.2c14598
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.orcidChen, Y. [0000-0002-6588-6266]
dc.identifier.urihttps://hdl.handle.net/2440/137328
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/DP190101155
dc.rights© 2022 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsami.2c14598
dc.subjectcharged domain walls
dc.subjectdomain switching
dc.subjectferroelectric
dc.subjectstrain gradient
dc.subjecttransmission electron microscopy
dc.titleFormation of Head/Tail-to-Body Charged Domain Walls by Mechanical Stress
dc.typeJournal article
pubs.publication-statusPublished online

Files

Collections

Electrical and Electronic Engineering publications