SAMPLE PREPARATION AND DIELECTRIC SPECTRUM EQUIVALENT CIRCUITS MODELING FOR Bi2Mn2O7

Abstract

A Bi₂Mn₂O₇ ceramic sample was prepared by solid state reaction method. Its dielectric property was then characterized by impedance analysis within frequencies range from 10² Hz to 10⁶ Hz and temperatures range from room temperature to 450 °C. All spectrums were then normalized into a single master curve. The dielectric response mechanism observed in the sample master curve spectrum were modeled by combinations of diffusive, quasi-dc, bound charge (dipole-like) elements with a non-dispersive capacitor. The experimental data are in close agreement with the value obtained from equivalent circuit.