Journal article
Clamping enables enhanced electromechanical responses in antiferroelectric thin films
Nature materials
23 May 2024
PMID: 38783106
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Thin-film materials with large electromechanical responses are fundamental enablers of next-generation micro-/nano-electromechanical applications. Conventional electromechanical materials (for example, ferroelectrics and relaxors), however, exhibit severely degraded responses when scaled down to submicrometre-thick films due to substrate constraints (clamping). This limitation is overcome, and substantial electromechanical responses in antiferroelectric thin films are achieved through an unconventional coupling of the field-induced antiferroelectric-to-ferroelectric phase transition and the substrate constraints. A detilting of the oxygen octahedra and lattice-volume expansion in all dimensions are observed commensurate with the phase transition using operando electron microscopy, such that the in-plane clamping further enhances the out-of-plane expansion, as rationalized using first-principles calculations. In turn, a non-traditional thickness scaling is realized wherein an electromechanical strain (1.7%) is produced from a model antiferroelectric PbZrO
film that is just 100 nm thick. The high performance and understanding of the mechanism provide a promising pathway to develop high-performance micro-/nano-electromechanical systems.
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Details
- Title
- Clamping enables enhanced electromechanical responses in antiferroelectric thin films
- Creators
- Hao Pan - University of California, BerkeleyMenglin Zhu - Massachusetts Institute of TechnologyElla Banyas - Lawrence Berkeley National LaboratoryLouis Alaerts - Dartmouth CollegeMegha Acharya - University of California, BerkeleyHongrui Zhang - University of California, BerkeleyJiyeob Kim - University of California, BerkeleyXianzhe Chen - University of California, BerkeleyXiaoxi Huang - University of California, BerkeleyMichael Xu - Massachusetts Institute of TechnologyIsaac Harris - University of California, BerkeleyZishen Tian - Lawrence Berkeley National LaboratoryFrancesco Ricci - Lawrence Berkeley National LaboratoryBrendan Hanrahan - DEVCOM Army Research LaboratoryJonathan E Spanier - Drexel UniversityGeoffroy Hautier - Dartmouth CollegeJames M LeBeau - Massachusetts Institute of TechnologyJeffrey B Neaton - University of California, BerkeleyLane W Martin - Lawrence Berkeley National Laboratory
- Publication Details
- Nature materials
- Publisher
- Springer Nature
- Grant note
- W911NF-21-1-0126 / United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Office (ARO) W911NF-19-2-0119 / United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Laboratory (U.S. Army Research Laboratory) FA9550-18-1-0480 / United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research (AF Office of Scientific Research) DE-SC-0012375 / U.S. Department of Energy (DOE) DE-AC02-05CH11231 / U.S. Department of Energy (DOE) W911NF-21-1-0126 / United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Laboratory (U.S. Army Research Laboratory) DE-AC02-05-CH11231 / U.S. Department of Energy (DOE) W911NF-21-1-0118 / United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Office (ARO)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001230099000001
- Scopus ID
- 2-s2.0-85193998253
- Other Identifier
- 991021881389404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter