Interfacial-Strain-Controlled Ferroelectricity in Self-Assembled BiFeO3 Nanostructures
Abstract
Self-assembled BiFeO3-CoFe2O4 (BFO-CFO) vertically aligned nanocomposites are promising for logic, memory, and multiferroic applications, primarily due to the tunability enabled by strain engineering at the prodigious epitaxial vertical interfaces. However, local investigations directly revealing functional properties in the vicinity of such critical interfaces are often hampered by the size, geometry, microstructure, and concomitant experimental artifacts. Ferroelectric switching in the presence of lateral distributions of vertical strain thus remains relatively unexplored, with broader implications for all strain-engineered functional devices. Additionally, by implementing tomographic atomic force microscopy, 3D domain orientation mapping, and spatially-resolved ferroelectric switching movies, local tensile strain significantly impacts the ferroelectric switching, principally by retarding domain nucleation in the BFO nearest to the vertically epitaxial tensile-strained interfaces. The relaxed centers of the BFO pillars become preferred domain nucleation and growth sites for low biases, with up to an order of magnitude change in the edge:center switching ratio for high biases. The new, multi-dimensional imaging approach—and its corresponding insights especially for directly strained interface effects on local properties—thereby advances the fundamental understanding of polarization switching and provides design principles for optimizing functional response in confined nanoferroic systems.
- Authors:
-
[1];
[3];
[3];
[1]
- Univ. of Connecticut, Storrs, CT (United States)
- Univ. of Wisconsin, Madison, WI (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
- OSTI Identifier:
- 1840884
- Report Number(s):
- LA-UR-21-22846
Journal ID: ISSN 1616-301X
- Grant/Contract Number:
- 89233218CNA000001; DMR-1726862; CBET-2006028; ACI-1548562; ACI-1445606
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 34; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; BiFeO3-CoFe2O4; ferroelectric switching; interfacial strains; nanomachining; tomographic AFM
Citation Formats
Song, Jingfeng, Zhuang, Shihao, Martin, Michael, Ortiz‐Flores, Luis A., Paudel, Binod, Yarotski, Dmitry, Hu, Jiamian, Chen, Aiping, and Huey, Bryan D. Interfacial-Strain-Controlled Ferroelectricity in Self-Assembled BiFeO3 Nanostructures. United States: N. p., 2021.
Web. doi:10.1002/adfm.202102311.
Song, Jingfeng, Zhuang, Shihao, Martin, Michael, Ortiz‐Flores, Luis A., Paudel, Binod, Yarotski, Dmitry, Hu, Jiamian, Chen, Aiping, & Huey, Bryan D. Interfacial-Strain-Controlled Ferroelectricity in Self-Assembled BiFeO3 Nanostructures. United States. https://doi.org/10.1002/adfm.202102311
Song, Jingfeng, Zhuang, Shihao, Martin, Michael, Ortiz‐Flores, Luis A., Paudel, Binod, Yarotski, Dmitry, Hu, Jiamian, Chen, Aiping, and Huey, Bryan D. Thu .
"Interfacial-Strain-Controlled Ferroelectricity in Self-Assembled BiFeO3 Nanostructures". United States. https://doi.org/10.1002/adfm.202102311. https://www.osti.gov/servlets/purl/1840884.
@article{osti_1840884,
title = {Interfacial-Strain-Controlled Ferroelectricity in Self-Assembled BiFeO3 Nanostructures},
author = {Song, Jingfeng and Zhuang, Shihao and Martin, Michael and Ortiz‐Flores, Luis A. and Paudel, Binod and Yarotski, Dmitry and Hu, Jiamian and Chen, Aiping and Huey, Bryan D.},
abstractNote = {Self-assembled BiFeO3-CoFe2O4 (BFO-CFO) vertically aligned nanocomposites are promising for logic, memory, and multiferroic applications, primarily due to the tunability enabled by strain engineering at the prodigious epitaxial vertical interfaces. However, local investigations directly revealing functional properties in the vicinity of such critical interfaces are often hampered by the size, geometry, microstructure, and concomitant experimental artifacts. Ferroelectric switching in the presence of lateral distributions of vertical strain thus remains relatively unexplored, with broader implications for all strain-engineered functional devices. Additionally, by implementing tomographic atomic force microscopy, 3D domain orientation mapping, and spatially-resolved ferroelectric switching movies, local tensile strain significantly impacts the ferroelectric switching, principally by retarding domain nucleation in the BFO nearest to the vertically epitaxial tensile-strained interfaces. The relaxed centers of the BFO pillars become preferred domain nucleation and growth sites for low biases, with up to an order of magnitude change in the edge:center switching ratio for high biases. The new, multi-dimensional imaging approach—and its corresponding insights especially for directly strained interface effects on local properties—thereby advances the fundamental understanding of polarization switching and provides design principles for optimizing functional response in confined nanoferroic systems.},
doi = {10.1002/adfm.202102311},
journal = {Advanced Functional Materials},
number = 34,
volume = 31,
place = {United States},
year = {Thu Jun 17 00:00:00 EDT 2021},
month = {Thu Jun 17 00:00:00 EDT 2021}
}
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