Nanosecond electric pulse-induced ultrafast piezoelectric responses in Co3+ substituted BiFeO3 epitaxial thin films

Nanosecond electric pulse-induced ultrafast piezoelectric responses in Co3+ substituted BiFeO3 epitaxial thin films

Current Applied Physics

10.1016/j.cap.2024.11.012

https://doi.org/10.1016/j.cap.2024.11.012

Sanjith Unithrattil, Taewon Min, Gopinathan Anoop, Jun Young Lee, Tae Yeon kim, Shibnath Samanta, Yubo Qi, Jiahao Zhang, Seung Hyun Hwang, Hyeon Jun Lee, Kun Guo, Su Yong Lee, Yasuhiko Imai, Osami Sakata, Keisuke Shimizu, Kei Shigematsu, Hajime Hojo, Kui Yao, Masaki Azuma, Jaekwang Lee, Andrew M. Rappe, Ji Young Jo

BiFeO3; ultrafast piezo response; time-resolved X-ray microdiffraction

22 November 2024

Unithrattil, S., Min, T., Anoop, G., Lee, J. Y., kim, T. Y., Samanta, S., Qi, Y., Zhang, J., Hwang, S. H., Lee, H. J., Guo, K., Lee, S. Y., Imai, Y., Sakata, O., Shimizu, K., Shigematsu, K., Hojo, H., Yao, K., Azuma, M., … Jo, J. Y. (2025). Nanosecond electric pulse-induced ultrafast piezoelectric responses in Co3+ substituted BiFeO3 epitaxial thin films. Current Applied Physics, 70, 76–80. https://doi.org/10.1016/j.cap.2024.11.012

Understanding the ultra-fast dynamics of ferroelectric materials is essential for advancing the development of next-generation high speed electronic and photonic devices. In this study, we investigate the ultrafast piezoelectric response of cobalt-substituted BiFeO3 (BiFe1-xCoxO3) with x = 0.15, consisting of MC and MA type monoclinic phases. The real-time piezoelectric response in (001)-oriented BiFe0.85Co0.15O3 (BFCO) epitaxial thin film was monitored using the time-resolved X-ray microdiffraction technique under an applied electric field with pulse widths 70 ns and 100 ns. The BiFe0.85Co0.15O3 thin film yielded a high piezoelectric strain of approximately 0.53 % along [001] direction, with a giant c/a ratio (~ 1.26) at an electric field of 1.3 MV/cm and a pulse width of 100 ns, with a 𝑑𝑑33 piezoelectric coefficient of 40 pm/V. The piezoelectric response of BiFe0.85Co0.15O3 was completely reversible on releasing the applied electric field. This finding is an important step towards the development of a high performance lead-free piezoelectric material for ultrafast operations in advanced technological applications.

Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

There was no specific funding for the research done

https://oar.a-star.edu.sg/communities-collections/articles/22780

1567-1739

Institute of Materials Research and Engineering