High-Performance 0-3 Type Niobate-based Lead-free Piezoelectric Composite Ceramics with ZnO Inclusions
Type
ArticleAuthors
Lv, XiangLi, Jun
Men, Tian-Lu
Wu, Jiagang
Zhang, Xixiang

Wang, Ke
Li, Jing-Feng
Xiao, Dingquan
Zhu, Jianguo
KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Date
2018-08-14Online Publication Date
2018-08-14Print Publication Date
2018-09-12Permanent link to this record
http://hdl.handle.net/10754/628486
Metadata
Show full item recordAbstract
Because of their high toxicity, lead-based materials in electronic devices must be replaced by lead-free piezoelectric materials. However, some issues remain that hinder the industrial applications of these alternative ceramics. Here, we report the construction of a 0-3-type ceramic composite (KNNS-BNKZ: xZnO), where the Sb-doped ZnO sub-micronic particles were randomly distributed throughout the potassium-sodium niobate-based ceramic matrix. In this KNN-based ceramic composite, superior temperature stability, excellent piezoelectric properties, and a high Curie temperature were simultaneously achieved. The unipolar strain varied from +20% to -16% when the temperature was increased from 23 oC to 200 oC in KNNS-BNKZ: xZnO with x=0.75. By increasing the ZnO content from x=0 to 5.0, the Curie temperature was increased from 227 oC to 294 oC. More importantly, the piezoelectric coefficient remained high (d33=480-510 pC/N) for a wide range of compositions, x=0.25-1.0. Transmission electron microscopy (TEM) experiments showed that the compensatory electric fields generated by the Sb-doped ZnO sub-micronic particles were responsible for the improved temperature stability. The high piezoelectricity was due to the existence of nanodomains, which were clearly observed in the TEM experiments. The results presented in this work clarify some of the physical mechanisms in this KNN-based ceramic composite, thus advancing the development of lead-free ceramics.Citation
Lv X, Li J, Men T-L, Wu J, Zhang X, et al. (2018) High-Performance 0-3 Type Niobate-Based Lead-Free Piezoelectric Composite Ceramics with ZnO Inclusions. ACS Applied Materials & Interfaces. Available: http://dx.doi.org/10.1021/acsami.8b10136.Sponsors
The authors gratefully acknowledge that the research reported in this publication was supported by the National Natural Science Foundation of China (NSFC Nos. 51722208, and 51332003), the Key Technologies Research and Development Program of Sichuan Province (No. 2018JY0007) and the Graduate Student’s Research and Innovation Fund of Sichuan University (Nos. 2018YJSY009, 2018YJSY071 and 2012017yjsy111).Publisher
American Chemical Society (ACS)Additional Links
https://pubs.acs.org/doi/10.1021/acsami.8b10136ae974a485f413a2113503eed53cd6c53
10.1021/acsami.8b10136