Fig. 1. Schematic diagram of BCTO ferroelectric thin films preparation process

Fig. 2. DSC-TG diagram of BCTO powder

Fig. 3. XRD patterns of BCTO thin films irradiated by γ ray with different doses

Fig. 4. Surface morphologies: (a) 0 kGy；(b) 50 kGy；(c)100 kGy；(d) 150 kGy and cross-section images (a′~d′) of BCTO thin films irradiated by γ ray with different doses

Fig. 5. Energy spectrum test of element content on the surface of BCTO films

Fig. 6. Ferroelectric properties of BCTO thin films irradiated by γ ray with different doses

Fig. 7. Leakage current density curves of BCTO thin films irradiated by γ rays with different doses

Fig. 8. Anti-fatigue characteristics of BCTO thin films irradiated by γ ray with different doses