
Giant piezoelectricity in oxide thin films with nanopillar structure
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 πβ33,π of ~1098 picometers per volt with a high Curie temperature of ~450Β°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.
Files
Metadata
Work Title | Giant piezoelectricity in oxide thin films with nanopillar structure |
---|---|
Access | |
Creators |
|
License | In Copyright (Rights Reserved) |
Work Type | Article |
Publisher |
|
Publication Date | July 17, 2020 |
Publisher Identifier (DOI) |
|
Deposited | August 10, 2022 |
Versions
Analytics
Collections
This resource is currently not in any collection.