Retaining graphene structure in the synthesis of its composite with BiFeO3

Abstract

Introduction of graphene in the Bi2O3-Fe2O3 system has been found to facilitate the formation of perovskite phase of BiFeO3(BFO). The room temperature XRD pattern shows that the formation of BiFeO3(BFO) and also its composite with graphene has started at a sintering temperature as early as 300 degrees C. Both XRD and FESEM of the sintered sample has shown that the addition of graphene has a marked effect on both the structure and microstructure of BiFeO3(BFO). Micro Raman spectra shows intensity ratio of 2D to G is around 1 indicating the presence of graphene as bi-layer in composite even upto a sintering temperature of 600 degrees C. The graphene flaky nature with stacking of layers and sheet like folds having randomly orientation morphology has been confirmed from the TEM of the composite. So, an enhanced multiferroic properties has been envisioned due to the presence of pi conjugate carbon network in the BFO matrix. (C) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 1st International Conference on Energy, Material Sciences and Mechanical Engineering.