A study of structural, optical and electrical studies of the composites of ZnFe2O4, BiFeO3 and GaFeO3 compounds

Abstract

The composites of the form 0.5ZFO + 0.4BFO + 0.1GFO (S1) and 0.75ZFO + 0.2BFO + 0.05GFO (S2) and synthesized by solid state route are reported in this study. These composites were subjected to structural, energy bandgap and dielectric studies. The XRD spectral analysis confirms that all the three phases are present in the samples under study. The BiFeO3 phase has acquired orthorhombic (Pnma) crystal structure, ZnFe2O4 has crystallized into cubic (Fd-3m) structure where GaFeO3 exhibited trigonal (R3c) structure. Diffuse reflectance spectral study conveys the sample to possess wide energy bandgap ≈2eV. The dielectric studies reveals the samples are extremely good dielectric materials with average dielectric constant, low loss value and relatively low decreasing rate with respect to applied field for both features.