Study of Maxwell–Wagner (M–W) relaxation behavior and hysteresis observed in bismuth titanate layered structure obtained by solution combustion synthesis using dextrose as fuel

• Bi4Ti3O12 is synthesized using solution combustion technique with dextrose as fuel.
• Dextrose has high reducing capacity (+24) and generates more no. of moles of gases.
• Impedance studies show that the sample follows Maxwell–Wagner relaxation behavior.
• Shows lower remnant polarization due to higher c-axis ratio.

Structural, dielectric and ferroelectric properties of bismuth titanate (Bi4Ti3O12) obtained by solution combustion technique using dextrose as fuel is studied extensively in this paper. Dextrose is used as fuel as it has high reducing valancy and generates more number of moles of gases during the reaction. X-ray diffraction studies show that phase formation and crystallinity was reached only after calcinations at 800 °C. Dielectric constant versus temperature curve shows ferroelectric to paraelectric transition temperature (Tc) to be 650 °C. The dielectric loss is very less (tan δ < 1) at lower temperatures but increases around Tc due to structural changes in the sample. Complex impedance curves show deviation from Debye behavior. The material shows a thin PE Loop with low remnant polarization due to high conductivity in the as prepared sample.

X-ray diffraction studies show that phase formation and crystallinity was reached only after calcinations at 800 °C. Dielectric constant versus temperature curve shows ferroelectric to paraelectric transition temperature (Tc) to be 650 °C. Complex impedance curves show deviation from Debye behavior. The material shows a thin PE Loop with low remnant polarization due to high conductivity in the as prepared sample.Figure optionsDownload as PowerPoint slide