Research Article
Yogesh A. Chaudhari, Prashant
Abstract
Multiferroic BiFe0.95Zn0.05O3 was prepared by a novel solution combustion method (SCM) using metal nitrates (Oxidizers) and glycine (Fuel) as starting materials. The x-ray diffraction (XRD) spectra revels that the sample has rhombhohedral perovskite structure having space group R3c with a small impurity peak corresponding to Bi12(Bi0.5Fe0.5)O19.5 observed around 300 in the 2θ range. The surface morphology of the sample was studied by scanning electron microscope (SEM). The ferroelectric measurement of sample shows maximum saturation polarization Ps = 0.65 μC/cm2 and remanent polarization of Pr = 0.27 μC/cm2. The dielectric constant versus temperature measurement shows the dielectric constant (ε ~ 35, 33, f= 10kHz, 1MHz at RT and ε ~ 661, 116, f = 10kHz, 1MHz at T = 400 0C) of sample continuously increasing with temperature in range 30 - 400 0C and dielectric loss versus temperature plot (tanδ ~ 0.046, 0.014, f = 10kHz, 1MHz at RT and tanδ ~ 4.86, 0.72, f = 10 kHz, 1MHz at T = 400 0C) in the frequency range 10 kHz-1MHz exhibits a good dielectric performance. The dielectric constant and loss as a function of frequency in the range 10 kHz -1 MHz was studied at room temperature.