La3+ modified bismuth titanate (BLT) prepared by sol - gel synthesis: Structural, dielectric, impedance and ferroelectric studies

Sol - gel synthesis method was used to prepare lanthanum doped Bismuth Titanate BLT ceramics. Structural properties of BLT ceramics were studied by X - ray analysis (XRD). Rietveld refinement of the BLT ceramics was carried out. Microstrain, domain size and density of dislocation were calculated by Williamson Hall (WH) plot method. Microstructural properties were studied by scanning electron microscopy (SEM) and it has been found that the grain size decreases with La3+ modification in bismuth titanate. Dielectric, impedance and ferroelectric properties of BLT ceramics have been investigated.