Publication date: 16th July 2025
Abstract:
(1-
= 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 are synthesized using double sintering ceramic technique at 1250 
C for four hours. The X-ray diffraction (XRD) patterns contain tetragonal structure of perovskite phase and spinel cubic structure of ferrite phase. Theoretical density and bulk density show opposite behavior with changing ferrite concentrations. The porosity decreases to almost 22.9 % with the increase of CFLO. Increased peak intensity indicates better crystallization. The Fourier Transform Infrared (FTIR) spectra of the investigated samples show the characteristic vibration bands of Fe-O, Ba-O and Ti-O. The grain size increases from 1.01 µm to 1.95 µm. The dielectric constant (ε՛) and loss tangent (tanδ) decreases with increasing CFLO. As ferrite content increases, P-E hysteresis loops indicate transition from para-electric to ferro-electric. Conductivity reduces according to sum rule of mixture. Saturation magnetization, Ms increased to 49.27 emu/gm from 11.55 emu/gm in case of composites. Due to the increased coercivity, 
, the composites convert from “soft” to “hard” magnet. Having high saturation magnetization and saturation polarization, the composite with x = 0.8 can be a suitable candidate for spintronic devices.
Keywords: Multiferroic; XRD; FTIR; Dielectrics; M-H loop.
•Department of Physics, University of Dhaka
•Materials Science Division, Atomic Energy Centre, Dhaka Nano and Advanced Materials Lab, Department of Physics, University of Dhaka
•Bangladesh Council of Scientific and Industrial Research, Dhaka
•Bangladesh University of Engineering and Technology, Dhaka
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