Abstract
Effects of A-site nonstoichiometry on 3at% Ni-doped Na0.5Bi0.5TiO3 thin film were investigated. The influence of Na deficiency and Bi excess on the microstructure and electrical properties for the films were determined in comparison to the stoichiometric sample. The polycrystalline perovskite structure can be maintained at all compositions without secondary phase. Compared with the stoichiometric film, either Na deficiency or Bi excess can result in a decreased grain size. The enhanced insulating characteristic, ferroelectric and dielectric properties can be obtained in the Na or Bi nonstoichiometric thin films. Especially, the Na0.5Bi0.5(1+0.08)Ti0.97Ni0.03O3 thin film exhibits larger remanent polarization (Pr) of 22.3 μC/cm2 and dielectric tunability of 24.4%. These results show that Na deficiency or Bi excess lead to improved electrical performances for Na0.5Bi0.5TiO3-based thin films to some extent, rendering it suitable for ferroelectric and dielectric applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
