Synthesis and investigation of temperature effects on barium titanate (BaTiO3) nanostructural and electrical properties

In the present work, BaTiO3 samples were synthesized by sol-gel method and then they were coated on Si substrate for 30 min at 1500 rpm. The samples were finally calcined at T-1 = 85 degrees C, T-2 = 200 degrees C, T-3 = 400 degrees C and T-4 = 600 degrees C to investigate temperature effects on them. The nano structural and nano compositional properties of the samples were also investigated by using thermo gravimetric analysis, X-ray diffraction (XRD), scanning electron microscopy, energy dispersive X-ray, X-map and atomic force microscopy techniques. According to XRD technique, the particle's sizes were 10-38 nm. The BaTiO3 particles size increased relatively with increasing temperature. According to Fourier transfer infrared radiation technique, the junctions between Ba, Ti and O were strong. In this research, current-voltage (I-V), capacitance-voltage (C-V) and current density-voltage (J-V) curves were used for determining temperature effects on electrical properties of BaTiO3 nanostructure. Dielectric constant and impedance (Z) of BaTiO3 samples were investigated, as well.