Crystal structure investigation of La doped BiFeO3 multiferroics by Rietveld analysis
DOI:
https://doi.org/10.37591/rrjophy.v7i1.154Abstract
Polycrystalline materials with composition Bi0.8La0.2FeO3 multiferroics were prepared through solid state reaction method. The room temper ature XRD confirmed the very well synthesis of the sample without any trace of any impurity phase. The Rietveld analysis of the XRD pattern manifest the interesting evident of devising the structural phase not exactly Rhombohedral (R3c) but instead it exhibits a combination of 90% rhombohedral(R3c) and 10% α phase of BiFeO3 Triclinic (P1). This goes in contradiction to the previously reported studies which emphasize the structure to be restricted to rhombohedral phase. The decency of the fit can be confirmed through the lower values of Rp, Rwp, and χ2. The density spectrum get by the G- Fourier program of FullProf predict the uniformity in sample structure. The significance of the study lies in the restriction of impurity phases while synthesis, which leads to unwanted leakage currents (losses).
Keywords: Crystal structure, multiferroics, polycrystalline
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