Ultrahigh electromechanical response from competing ferroic orders.

Autor: Lin B; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore., Ong KP; Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Yang T; Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China., Zeng Q; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Hui HK; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Ye Z; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.; Department of Mechanical Engineering, National University of Singapore, Singapore, Republic of Singapore., Sim C; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore., Yen Z; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore., Yang P; Singapore Synchrotron Light Source (SSLS), National University of Singapore, Singapore, Republic of Singapore., Dou Y; Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Singapore, Republic of Singapore., Li X; Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China., Gao X; Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China., Tan CKI; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Lim ZS; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Zeng S; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Luo T; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore., Xu J; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.; Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Republic of Singapore., Tong X; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore.; Institute of Technological Sciences, Wuhan University, Wuhan, China., Li PWF; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore., Ren M; Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Singapore, Republic of Singapore., Zeng K; Department of Mechanical Engineering, National University of Singapore, Singapore, Republic of Singapore., Sun C; Institute of Technological Sciences, Wuhan University, Wuhan, China., Ramakrishna S; Department of Mechanical Engineering, National University of Singapore, Singapore, Republic of Singapore., Breese MBH; Singapore Synchrotron Light Source (SSLS), National University of Singapore, Singapore, Republic of Singapore., Boothroyd C; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore.; Facility for Analysis, Characterisation, Testing and Simulation (FACTS), Nanyang Technological University, Singapore, Republic of Singapore., Lee C; Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Republic of Singapore., Singh DJ; Department of Physics and Astronomy, University of Missouri, Columbia, MO, USA., Lam YM; School of Materials Science and Engineering, Nanyang Technological University, Singapore, Republic of Singapore. ymlam@ntu.edu.sg.; Facility for Analysis, Characterisation, Testing and Simulation (FACTS), Nanyang Technological University, Singapore, Republic of Singapore. ymlam@ntu.edu.sg., Liu H; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore. liu_huajun@imre.a-star.edu.sg.
Jazyk: angličtina
Zdroj: Nature [Nature] 2024 Sep; Vol. 633 (8031), pp. 798-803. Date of Electronic Publication: 2024 Sep 11.
DOI: 10.1038/s41586-024-07917-9
Abstrakt: Materials with electromechanical coupling are essential for transducers and acoustic devices as reversible converters between mechanical and electrical energy 1-6 . High electromechanical responses are typically found in materials with strong structural instabilities, conventionally achieved by two strategies-morphotropic phase boundaries 7 and nanoscale structural heterogeneity 8 . Here we demonstrate a different strategy to accomplish ultrahigh electromechanical response by inducing extreme structural instability from competing antiferroelectric and ferroelectric orders. Guided by the phase diagram and theoretical calculations, we designed the coexistence of antiferroelectric orthorhombic and ferroelectric rhombohedral phases in sodium niobate thin films. These films show effective piezoelectric coefficients above 5,000 pm V -1 because of electric-field-induced antiferroelectric-ferroelectric phase transitions. Our results provide a general approach to design and exploit antiferroelectric materials for electromechanical devices.
(© 2024. The Author(s).)
Databáze: MEDLINE
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