Journal article
Colossal Electromechanical Response in Antiferroelectric-based Nanoscale Multilayers
Advanced materials (Weinheim), 2419690
25 Feb 2025
PMID: 40007069
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The pursuit of smaller, energy-efficient devices drives the exploration of electromechanically active thin films (<1 µm) to enable micro- and nano-electromechanical systems. While the electromechanical response of such films is limited by substrate-induced mechanical clamping, large electromechanical responses in antiferroelectric and multilayer thin-film heterostructures have garnered interest. Here, multilayer thin-film heterostructures based on antiferroelectric PbHfO
and ferroelectric PbHf
Ti
O
overcome substrate clamping to produce electromechanical strains >4.5%. By varying the chemistry of the PbHf
Ti
O
layer (x = 0.3-0.6) it is possible to alter the threshold field for the antiferroelectric-to-ferroelectric phase transition, reducing the field required to induce the onset of large electromechanical response. Furthermore, varying the interface density (from 0.008 to 3.1 nm
) enhances the electrical-breakdown field by >450%. Attaining the electromechanical strains does not necessitate creating a new material with unprecedented piezoelectric coefficients, but developing heterostructures capable of withstanding large fields, thus addressing traditional limitations of thin-film piezoelectrics.
Metrics
Details
- Title
- Colossal Electromechanical Response in Antiferroelectric-based Nanoscale Multilayers
- Creators
- Megha Acharya - University of California, BerkeleyLouis Alaerts - Dartmouth CollegeElla Banyas - Lawrence Berkeley National LaboratoryDeokyoung Kang - University of California, BerkeleyFrancesco Ricci - Lawrence Berkeley National LaboratoryHao Pan - University of California, BerkeleyBrendan Hanrahan - DEVCOM Army Research LaboratoryJonathan E Spanier - Drexel UniversityJeffery B Neaton - University of California, BerkeleyGeoffroy Hautier - Dartmouth CollegeLane W Martin (Corresponding Author) - University of California, Berkeley
- Publication Details
- Advanced materials (Weinheim), 2419690
- Publisher
- Wiley
- Number of pages
- 10
- Grant note
- FA9550-24-1-0266 / Air Force Office of Scientific Research DMR-2102895 / National Science Foundation W911NF-24-2-0100 / Army Research Laboratory DE-AC02-05-CH11231 / Office of Basic Energy Sciences, Materials Sciences and Engineering Division U.S. Department of Energy, Office of Science W911NF-21-1-0126 / Army Research Office W911NF-21-1-0118 / Army Research Office
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001432315500001
- Scopus ID
- 2-s2.0-105002267720
- Other Identifier
- 991022032070004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter