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Herein, polycrystalline composites of the type (1-x) Bi0.9La0.05Sr0.05FeO3 (BLSFO)– (x)BaTi0.8Zr0.2O3 (BTZO) with x = 0.05, 0.1, and 0.15 synthesized via high temperature solid state reaction route are reported. The structural, microstructural, electrical, and magnetic characteristics were outlined. The presence of BLSFO (R 3 c) and BTZO phase (P 4 m m) in the composite was confirmed by carrying out Rietveld refinement of X-ray diffraction (XRD) data. From the field effect scanning electron microscopic (FESEM) images, non-homogeneous grains and grain boundary were identified. The study of energy-dispersive analysis of X-ray (EDAX) spectrum revealed the elemental composition of these composites with absence of any foreign element. Furthermore, room temperature electrical properties of these composite systems were emphasized. Dielectric constant and loss value of all the composites decreases as frequency increases attributed to Maxwell–Wagner type of relaxation. The electrical modulus and impedance spectrum demonstrates a deviation from an ideal Debye-like relaxation process. The P-E hysteresis loop of composite improves as BTZO concentration increases arising from better ferroelectric nature of BTZO ceramic. As the BTZO content increases, the M-H hysteresis loop of composites makes transition from ferromagnetic to paramagnetic nature. [ABSTRACT FROM AUTHOR]

In the present work, we synthesized composites (1 − x) Bi0.9La0.1FeO3-(x) BaTiO3 with x = 0.05, 0.10, and 0.15 by solid-state technique. We studied their crystal structure, morphology, optical, electrical, and magnetic behavior. Crystal structure of the constituents of the composites and their presence in the composite was witnessed from the analysis of X-ray diffractograms by Rietveld refinement of the synthesized composites. Micrographs obtained from FESEM characterization technique revealed the non-homogeneous grain and grain boundaries with no foreign impurities. In addition, energy-dispersive X-ray diffraction analysis (EDAX) confirms the presence of all the integral elements of the composite. Optical bandgap of the order of ~ 2.19 eV was estimated from the analysis of diffuse reflectance UV–Vis spectroscopy (DRS). Temperature-dependent dielectric properties of the synthesized samples were measured at different constant frequency values in the temperature range from 100 to 350 °C. A gradual increase in dielectric constant from 180 °C was shown by all the samples. Corresponding to different applied constant field values, the polarizability vs. electric field loop (P–E loop) of all composites displays leakage. This behavior is attributed to the volatile nature of bismuth ferrite. Magnetization vs. magnetic field (M–H) hysteresis loop characteristics obtained at room temperature revealed the anti-ferromagnetic nature for pure Bi0.9La0.1FeO3. Further, weak ferromagnetic property becomes dominant as BaTiO3 content increased in the composite.Article title: Kindly check and confirm the edit made in the title.ok [ABSTRACT FROM AUTHOR]