Work

Efficient Multifunctional Response and Polarization Switching in BiFeO 3 –PbZr 0.58 Ti 0.42 O 3 –MnFe 2 O 4 ‐Based Triphasic Composites for Advanced Pulsating Applications

Year: 2025

Type: article

Abstract: Owing to their efficient multifunctional responses, multiferroics have secured a notable position for use in sensors, memory, and spintronic devices. Herein, highly crystalline forms of BiFeO 3 , PbZr 0.58 Ti 0.42 O 3 , and MnFe 2 O 4 are obtained through hydrothermal, solid‐state, and sol–gel autocombustion methods, respectively. A triphasic composite series with the formula 0.9[(1–x)BiFeO 3 + x PbZr 0.58 Ti 0.42 O 3 + 0.1MnFe 2 O 4 ( x = 0.0–0.3, interval 0.1) is then prepared using the solid‐state route. X‐ray diffraction confirms the coexistence of rhombohedral‐distorted perovskite phases (BiFeO 3 and PbZr 0.58 Ti 0.42 O 3 ) alongside the cubic spinel phase (MnFe 2 O 4 ). Field‐emission scanning electron microscopy reveals porous surfaces with spherical and irregular grain morphologies. Ferroelectric analysis demonstrates a maximum polarization of 3.736 × 10 −3 μC cm − 2 , with the highest energy‐storage efficiency of 70.76% and minimal energy loss density (0.1498 μJ cm − 3 ) for the x = 0.2 composition, making it suitable for energy storage and memory applications. Positive‐up negative‐down analysis confirms significant variations in switching charge density across all composites. Meanwhile, magnetic hysteresis studies demonstrate soft ferromagnetic behavior dominated by the MnFe 2 O 4 phase, with optimal response in x = 0.3 sample with M max ≈ 0.38 emu g −1 , M r = 0.019 emu g −1 , and H c = 160 Oe. By harnessing these parameters, the x = 0.2 composition emerges as optimal for energy storage, while the x = 0.3 composition stands out for magnetic device applications.

Source: Advanced Engineering Materials

DOI: 10.1002/adem.202502430