The thermal, surface chemical, and electrical properties of BiFe1-xZnxO3 (x = 0, 0.06, 0.12) Nanocrystalline through Sol-gel Technique

Abstract

The synthesis of zinc doped bismuth ferrite has been successfully carried out using the sol- gel autocombustion method. The thermal properties through the TGA test showed that the mass began to stabilize in the range of temperature 600 - 750°C as the indication of the formation of single-phase BiFe0.88Zn0.12O3 nanocrystalline. It is obtained from the SEM test that the surface shape of BiFeO3 of zinc doping indicated that it was not homogeneous and there was clotting. Through the EDS test, it is shown the ratio of (% wt) Bi : Fe between calculations and experiments of 1:1 which indicates a stoichiometric reaction. The XPS study found Zn2p element has entered the Fe2p element. The electrical properties through the LCR test showed that the existence of Zn doped BiFeO3 nanocrystalline reduces the dielectric constant value at a frequency of 100 kHz - 1 MHz. The dielectric constant values are stable at high frequency which can potentially be applied to electromagnetic waves.