Fig. 1. XRD patterns of BErT thin films prepared under different deposition oxygen pressures

Fig. 2. SEM images of BErT thin films prepared under different deposition oxygen pressures. (a) 1 Pa; (b) 3 Pa; (c) 5 Pa; (d) 7 Pa

Fig. 3. Sectional morphology of BErT thin films deposited under oxygen pressure of 3 Pa

Fig. 4. Dielectric constant and dielectric loss of BErT thin films versus deposition oxygen pressure

Fig. 5. Dielectric constant and dielectric loss of BErT thin films versus frequency

Fig. 6. Dielectric constant and dielectric loss of BErT thin films versus electric field intensity at 1 kHz

Fig. 7. Dielectric constant and dielectric loss of BErT thin films versus temperature at frequency of 1 kHz

Fig. 8. Optical transmissivity of sample