Investigating the influence of magnetization intensity on magnetoelectric coupling in MnxZn1-xFe2O4-PbZr0.5Ti0.5O3 multiferroic liquids

The optoelectronic detectors made of multiferroic materials provide more possibilities for clinical diagnosis. In this study, Mn_xZn_1-xFe₂O₄ (x = 0, 0.25, 0.5, 0.75, 1) magnetic nanoparticles were prepared using a solid-phase method, to investigate how the magnetization effect the magnetoelectric coupling effect, Mn_xZn_1-xFe₂O₄-PbZr_0.5Ti_0.5O₃ multiferroic fluids were obtained by ball milling. Results show that as the concentration of Mn²⁺ ions (x) increases, the magnetization strength gradually increases, reaching a maximum saturation magnetization of 81.83 emu/g when x = 1. Additionally, the dielectric constant of the Mn_0.5Zn_0.5Fe₂O₄-PZT (x = 0.5) multiferroic fluids reaches a maximum value of 4.67. Under the application of an external magnetic field, the dielectric constant variation rate reaches a maximum of 78.43 % when x = 0.75. Ferroelectric performance studies show that when x = 0.75, the remnant polarization strength is 8.11 nC/cm², and the saturation polarization strength is 15.84 nC/cm². After applying a magnetic field, the remnant polarization strength variation rate reaches a maximum of 56.12 % at x = 0.5, yielding a coupling coefficient of 11.49 V/(cm∙Oe), demonstrating excellent magnetoelectric coupling performance. This study reveals the significant impact of magnetization strength on the performance of magnetoelectric composite multiferroic fluids, providing insights for further optimization of the magnetoelectric coupling coefficient.