11. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
22. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
33. College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
Photostrictive materials exhibit great potential in the light-driven microactuators/sensors, light-controlled microrobots, and other optomechanical applications. In this study, we present the photostrictive performance of Ni-modified Na0.5Bi0.5TiO3-BaTiO3 (NBT-BT) ceramics prepared by using spark plasma sintering. Under visible light illumination (405, 520 and 655 nm, respectively), the Na0.5Bi0.5TiO3-Ba(Ti0.5Ni0.5)O3 (NBT-BNT) ceramics exhibits large photostriction of the order of 10 -3 and photostriction coefficient around 10 -11 m 3/W. The XRD peaks of the sample under external illumination show low angle shift, indicating the light-induced lattice distortion, which contributes to the large photostrictive response of NBT-BNT ceramics.