Figures & data
Fig. 1 TG-DTA curves of (a) as-obtained precursor and (b) BFO nanoparticles calcined at 500 °C.
Fig. 2 XRD pattern of BFO nanoparticles calcined at 500 °C; peaks were indexed according to space group R3c (* and #: some traces of secondary phases) and Reitveld refined pattern with refinement parameters (inset).
Fig. 3 TEM micrographs at various magnification scales and SAED pattern of low temperature grown BFO NPs.
Fig. 4 Log(J) versus log(E) curve of BFO nanoparticles at room temperature showing power law dependence, J ∝ En and (inset) symmetric behavior of J versus E plot for both the polarities of applied field.
Fig. 5 (a) Real dielectric constant and loss (tan δ) with log frequencies at room temperature and (b) real dielectric constant as a function of temperature at various frequencies.
Fig. 6 P–E loop of BFO nanoparticles measured at room temperature.
Fig. 7 M–H hysteresis curve of BFO nanoparticles measured at room temperature.
Fig. 8 UV–vis optical absorbance spectrum and (inset) calculated band gap Eg.
