Please use this identifier to cite or link to this item: https://doi.org/10.1126/science.abb3209
Title: Giant piezoelectricity in oxide thin films with nanopillar structure
Authors: Liu, Huajun 
Wu, Haijun 
Khuong, Phuong Ong
Yang, Tiannan
Yang, Ping 
Das, Pranab Kumar 
Chi, Xiao 
Zhang, Yang
Diao, Caozheng 
Wong, Wai Kong Alaric 
Chew, Eh Piew 
Chen, Yi Fan
Tan, Chee Kiang Ivan
Rusydi, Andrivo 
Breese, Mark BH 
Singh, David J
Chen, Long-Qing
Pennycook, Stephen J 
Yao, Kui 
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
BOUNDARIES
PHYSICS
Issue Date: 17-Jul-2020
Publisher: AMER ASSOC ADVANCEMENT SCIENCE
Citation: Liu, Huajun, Wu, Haijun, Khuong, Phuong Ong, Yang, Tiannan, Yang, Ping, Das, Pranab Kumar, Chi, Xiao, Zhang, Yang, Diao, Caozheng, Wong, Wai Kong Alaric, Chew, Eh Piew, Chen, Yi Fan, Tan, Chee Kiang Ivan, Rusydi, Andrivo, Breese, Mark BH, Singh, David J, Chen, Long-Qing, Pennycook, Stephen J, Yao, Kui (2020-07-17). Giant piezoelectricity in oxide thin films with nanopillar structure. SCIENCE 369 (6501) : 292-+. ScholarBank@NUS Repository. https://doi.org/10.1126/science.abb3209
Abstract: High-performance piezoelectric materials are critical components for electromechanical sensors and actuators. For more than 60 years, the main strategy for obtaining large piezoelectric response has been to construct multiphase boundaries, where nanoscale domains with local structural and polar heterogeneity are formed, by tuning complex chemical compositions. We used a different strategy to emulate such local heterogeneity by forming nanopillar regions in perovskite oxide thin films. We obtained a giant effective piezoelectric coefficient d of ~1098 picometers per volt with a high Curie temperature of ~450°C. Our lead-free composition of sodium-deficient sodium niobate contains only three elements (Na, Nb, and O). The formation of local heterogeneity with nanopillars in the perovskite structure could be the basis for a general approach to designing and optimizing various functional materials. 33;f
Source Title: SCIENCE
URI: https://scholarbank.nus.edu.sg/handle/10635/192281
ISSN: 00368075
10959203
DOI: 10.1126/science.abb3209
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