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Ultrahigh field-ind...
Ultrahigh field-induced strain in lead-free ceramics
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- Wu, Jiyue (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Queen Mary University of London
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- Zhang, Haibin (författare)
- China Academy of Engineering Physics
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- Huang, Chang-Hsun (författare)
- National Chiao-Tung University
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- Tseng, Chiao-Wei (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Meng, Nan (författare)
- Queen Mary University of London
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- Koval, Vladimir (författare)
- Slovak Academy of Sciences
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- Chou, Yi-Chia (författare)
- National Chiao-Tung University
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- Zhang, Zhen, 1979- (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Yan, Haixue (författare)
- Queen Mary University of London; Northwestern Polytechnical University
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- Engelska.
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Ingår i: Nano Energy. - : Elsevier BV. - 2211-2855 .- 2211-3282. ; 76
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Due to the worldwide concerns of environmental protection and sustainable development, lead-free piezoelectric materials are greatly desired for bridging the electrical energy to the mechanical energy. However, their lower energy conversion coefficient compared to the conventional lead-containing piezoelectric materials significantly limits their device applications. Herein, we introduce a novel strategy to increase the strain of lead-free ferroelectric system via material structure design to create polar nano regions (PNRs) and point defects in the material while retaining the global ferroelectric phase. This added short-range structural heterogeneity in the material will facilitate the field-induced phase transition and reversible domain wall switching to enhance the strain. Following this strategy, we demonstrate an ultrahigh strain induced by an electric field in non-textured lead-free Bi0.5Na0.5TiO3 (BNT)-based ceramics. The strain in unipolar mode (Suni) can reach up to 0.74% at 70 kV/cm, making it the highest value in reported lead-free ceramics so far. This puts forward a good route to design high-performance piezoelectric materials by material structure engineering. It also reveals the promising potential of lead-free piezoelectric materials in practical electromechanical device applications.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Lead-free ceramics
- Piezoelectric
- Strain
- Phase transitions
- Polar nanoregions
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- Av författaren/redakt...
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Wu, Jiyue
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Zhang, Haibin
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Huang, Chang-Hsu ...
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Tseng, Chiao-Wei
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Meng, Nan
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Koval, Vladimir
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Chou, Yi-Chia
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Zhang, Zhen, 197 ...
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Yan, Haixue
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- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Annan elektrotek ...
- Artiklar i publikationen
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Nano Energy
- Av lärosätet
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Uppsala universitet