1. XRD patterns (a-b) of NBT-BNT and NBT-BT samples, cross sectional SEM images of NBT-BNT (c) and NBT-BT (d) ceramic

2. Absorption spectra (a) and bandgaps (b) of NBT-BNT and NBT-BT samples

3. Photostrictive performance of the NBT-BNT sample under different light conditions (shaded part indicates laser on state) (a), Stability of the photostrictive properties of the NBT-BNT sample under 5 kW/cm² (b) and 15 kW/cm² (c), photostriction coefficient of NBT-BNT sample under different light conditions (d), temperature change of the NBT-BNT sample (e) corresponding to Fig.(a), and thermal expansion curve of the NBT-BNT sample (f)

4. I-V curves of the NBT-BNT sample before (a) and after (b) electric polarization

5. XRD patterns of NBT-BNT sample under different external laser irradiations (a) and enlarged images of partial diffraction peaks (b)

6. XRD patterns (a) and enlarged patterns of partial peaks (b) of NBT-BNT sample at different temperatures

Table 1. Comparison of the photostrictive performances of the materials in literature and this work

Table 2. The displacement Δd/d of crystal planes of NBT- BNT samples under laser irradiation

Table 3. The displacement Δd/d of crystal planes of NBT- BNT samples at different temperatures