Article (Scientific journals)
Conformational Domain Wall Switch
Sharma, P.; Sando, D.; Zhang, Q. et al.
2019In Advanced Functional Materials, 18, p. 1807523
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Keywords :
Electric fields; Ferroelectric materials; Ferroelectricity; Nanoelectronics; Scanning probe microscopy; Atomistic simulations; Conformational change; Conformational control; Ferroelectric domains; Head-to-head domain walls; Kelvin probe microscopy; Multiferroics; Piezoresponse force microscopy; Domain walls
Abstract :
[en] Domain walls in ferroelectric materials have tantalizing potential in disruptive memory and reconfigurable nanoelectronics technologies. Here, a ferroelectric domain wall switch with three distinct addressable resistance states is demonstrated. The device operation hinges on fully controllable and reversible conformational changes of the domain wall. As validated by atomistic simulations consistent with the experiments, using electric field, the shape—and hence the charge state—of the domain wall and ultimately its conduction are altered. Sequential nanoscale transitions of the walls are visualized directly using stroboscopic-piezoresponse force microscopy and Kelvin probe microscopy. Anisotropic head-to-head domain wall injection, stabilized by the majority carrier type of the ferroelectric, BiFeO 3 , is identified as the key factor that enables conformational control. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Disciplines :
Physics
Author, co-author :
Sharma, P.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Sando, D.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Zhang, Q.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Cheng, X.;  Department of Materials Science and Engineering, Penn State University, University Park, PA 16802, United States
Prosandeev, S.;  Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, AR 72701, United States
Bulanadi, R.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Prokhorenko, Sergei ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Bellaiche, L.;  Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, AR 72701, United States
Chen, L.-Q.;  Department of Materials Science and Engineering, Penn State University, University Park, PA 16802, United States
Nagarajan, V.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Seidel, J.;  School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Language :
English
Title :
Conformational Domain Wall Switch
Publication date :
2019
Journal title :
Advanced Functional Materials
ISSN :
1616-301X
eISSN :
1616-3028
Publisher :
John Wiley & Sons, United Kingdom
Volume :
18
Pages :
1807523
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 May 2021

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