1. Quantitative investigation of electromechanical coupling of potassium sodium niobate-based thin films
- Author
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Yaodong Yang, Ming Liu, Bian Yang, Jihong Bian, Lei Wang, Guohua Lan, Fei Shao, Zhongshuai Liang, Linglong Li, and Junqi Gao
- Subjects
010302 applied physics ,Materials science ,business.industry ,Process Chemistry and Technology ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Piezoelectricity ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Characterization (materials science) ,Piezoresponse force microscopy ,Potassium sodium ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,Electromechanical coupling ,Optoelectronics ,Thin film ,0210 nano-technology ,business - Abstract
High-performance environment-friendly piezoelectric potassium sodium niobate (KNN)-based thin films have been emerged as promising lead-free candidates, while their substrate-dependent piezoelectricity faces the lack of high-quality information due to restraints in measurements. Although piezoresponse force microscopy (PFM) is a potential measuring tool, still its regular mode is not considered as a reliable characterization method for quantification. After combining machine-learning enabled analysis using PFM datasets, it is possible to measure piezoelectric properties quantitatively. Here we utilized advanced PFM technology empowered by machine learning to measure and compare the piezoelectricity of KNN based thin films on different substrates. The results provide a better understanding of the relationship between structures and piezoelectric properties of the thin films.
- Published
- 2020