Magneto-electric properties of (1-x)LaFeO3 - (x)MnFe2O4 based hybrid nanocomposites for advanced technological applications

In this research paper, a series of (1-x)LaFeO 3 - (x)MnFe 2 O 4 (LFO/MFO) nanocomposites with concentrations ( x = 0.1, 0.2, 0.3, 0.4, and 0.5) were synthesized through sol-gel auto combustion method. The x-ray diffraction analysis revealed pure FCC spinel phase and perovskite structure for MFO added in LFO respectively. FTIR analysis showed ʋ 1 and ʋ 2 absorption bands with wavenumbers 500 and 400 cm -1 . The frequency dependent dielectric parameters were investigated across abroad spectrum of AC frequencies, starting from 1 MHz to 3 GHz. Dielectric behaviors were found in well agreement with Maxwell – Wagner model followed by Koop’s theory, and hopping model at high frequency region. The Cole-Cole plot elaborated the conduction phenomenon. The nanocomposites demonstrate a stable and consistent dielectric constant (ε′) and dielectric loss (ε″) at moderate frequencies, making them highly suitable for applications in microwave devices, such as resonators , filters, and antennas where stable dielectric properties are crucial for efficient performance. The magnetic behavior was found at room temperature (RT) by applying magnetic field from -22 to +22 k Oe. Magnetic squareness for all prepared samples found <0.5 reported multi-domain structures that can be utilized in many technological areas like electronics, automotive, telecommunications, and magnetic storage devices.