Coupled electromagnetic treatment enhancing magnetic performance of Mn-Zn power ferrites for power electronics applications

Tools

Wang, Yuan and Zhang, Shiyuan and Zeng, Bo and Huang, Kunlan and Qin, Yi and Wang, Jie (2025) Coupled electromagnetic treatment enhancing magnetic performance of Mn-Zn power ferrites for power electronics applications. Ceramics International, 51 (27, Pa). pp. 53626-53637. ISSN 0272-8842 (https://doi.org/10.1016/j.ceramint.2025.09.108)

[thumbnail of Wang-etal-CI-2025-Coupled-electromagnetic-treatment-enhancing-magnetic-performance]
Preview
 Text. Filename: Wang-etal-CI-2025-Coupled-electromagnetic-treatment-enhancing-magnetic-performance.pdf
Accepted Author Manuscript
License: Creative Commons Attribution 4.0 logo
Download (2MB)| Preview

Abstract

In this work, a coupled electromagnetic treatment (CEMT) was proposed to enhance the magnetic performance of Mn-Zn power ferrites, addressing the increasing demand for functionality and efficiency in soft magnetic materials. This study investigates the effects of CEMT on the initial permeability and power loss of EP-13 Mn-Zn ferrite cores through systematic experimental analysis. The optimal CEMT conditions were identified as a magnetic field intensity of 1.5T, an electric field intensity of 1V, and 20 magnetization cycles. Under these conditions, the initial permeability increased by 10.09% at 25°C and by 5.58% at 100°C. The power loss was reduced by 2.80% at 25°C and by 6.81 % at 100°C, while the coercivity was reduced by 19.51%, and the saturation magnetization increased by 4.63%. Further microstructural analysis revealed that CEMT effectively promoted the transformation of low-angle to high-angle grain boundaries, facilitated dislocation rearrangement and annihilation, and contributed to residual stress relaxation. A reduction in microstructural defects was also observed at the grain boundaries. These changes reduced domain wall pinning and improved domain wall mobility, resulting in lower power loss. In summary, the results demonstrate that CEMT is an effective and environmentally friendly technique for optimizing the microstructure and magnetic properties of Mn-Zn ferrites. This method offers a promising strategy for improving initial permeability and reducing power loss in high-performance power ferrite applications, while also demonstrating the flexibility and scalability of CEMT for future industrial use.

ORCID iDs

Wang, Yuan, Zhang, Shiyuan, Zeng, Bo, Huang, Kunlan, Qin, Yi ORCID logoORCID: https://orcid.org/0000-0001-7103-4855 and Wang, Jie;
CORE (COnnecting REpositories)