Optimization of magnetic permeability and dielectric constant of soft magnetic absorbing materials to achieve optimal absorbing effect

1、 Introduction

2、 Adjustment strategy of magnetic permeability

（1） Element doping and alloying

Advanced Institute (Shenzhen) Technology Co., Ltd. optimizes magnetic permeability through element doping and alloying. In iron-based soft magnetic materials, appropriate doping of manganese (Mn) element can change the crystal structure and electronic structure of the material. The incorporation of Mn atoms affects the movement characteristics of magnetic domain walls, reduces the energy barrier for magnetic domain wall movement, and improves magnetic permeability within a certain frequency range. At the same time, by using an iron cobalt nickel multi-element alloy system, adjusting the ratio of the three elements, and utilizing the complementary magnetic properties of different elements, the overall magnetic response ability of the material is enhanced, thereby improving the magnetic permeability, making the Yanbo brand soft magnetic absorbing material have a stronger effect on the electromagnetic wave magnetic field component.

（2） Microstructure Design

1. Grain refinement
   By utilizing advanced preparation techniques such as mechanical alloying and rapid solidification technology, fine and uniform grains can be preparedSoft magnetic absorbing materialWhen the grain size decreases and the grain boundary area increases, the pinning effect of grain boundaries on magnetic domains is enhanced. Under the action of an external magnetic field, magnetic domains are more likely to rotate and move, thereby increasing magnetic permeability. For example, by controlling the grain size of the platinum brand soft magnetic absorbing material at the nanometer level, its magnetic permeability exhibits significant advantages in the high frequency range, effectively expanding the absorption bandwidth.
2. Texture construction
   Texture is constructed using methods such as magnetic field heat treatment or directional solidification. Under the action of a magnetic field, magnetic grains in soft magnetic absorbing materials preferentially grow and arrange along the direction of the magnetic field, forming specific textures. This texture enables the material to exhibit higher magnetic permeability in the direction of electromagnetic wave incidence, improving the coupling efficiency with the magnetic field and enhancing the absorption ability. For example, the research platinum brand soft magnetic absorbing material after magnetic field heat treatment has significantly improved magnetic permeability in a specific direction, and its absorbing performance in that direction is greatly enhanced.

3、 Adjustment methods for dielectric constant

（1） Add high dielectric materials

1. Ceramic material composite
   Combining high dielectric constant ceramics such as lead zirconate titanate (PZT) withResearch Platinum Brand Soft Magnetic Absorbing Materialsreunite with. PZT can be uniformly dispersed in soft magnetic matrix by powder metallurgy or sol-gel process. The high dielectric properties of PZT can effectively improve the dielectric constant of composite materials, and by controlling the particle size, content, and distribution of PZT, the dielectric loss of the material can be adjusted to produce appropriate electrical loss at the target absorption frequency, which can be absorbed in conjunction with magnetic loss.
2. Organic high dielectric material doping
   Introducing organic high dielectric materials such as polyvinylidene fluoride (PVDF). PVDF has a high dielectric constant and can be further improved through doping modification. When it is combined with soft magnetic absorbing materials, the crystallinity, molecular orientation, doping ion type and concentration of PVDF are controlled to adjust the dielectric constant and loss factor of the composite material. For example, when PVDF doped with specific ions is combined with research platinum brand soft magnetic absorbing materials, the dielectric constant is significantly increased at specific frequencies, and the absorbing performance is improved.

（2） Interface modification

1. Interface polarization enhancement
   Constructing special interface structures within soft magnetic absorbing materials to enhance interface polarization. For example, introducing a thin metal oxide interface layer, such as titanium dioxide (TiO ₂), between the soft magnetic phase and the dielectric phase. Under the action of an electric field, the TiO ₂ interface layer generates strong interface polarization, increasing the dielectric constant of the material.Advanced Institute (Shenzhen) Technology Co., LtdBy precisely controlling the thickness and preparation process of the interface layer, optimize the dielectric properties of Yanbo brand soft magnetic absorbing materials.
2. Nano interface regulation
   Utilizing nanotechnology to form nanoscale interfaces in materials. For example, in the preparation of nanoporous structures, under the action of an electric field, the charge distribution and motion at the pore interface generate additional polarization and loss, thereby increasing the dielectric constant. By using methods such as template synthesis or self-assembly to control the morphology, size, and distribution of the nanointerface, precise control of the dielectric constant can be achieved, enhancing the absorption effect.

4、 Synergistic optimization of magnetic permeability and dielectric constant

5、 Conclusion

Advanced Institute (Shenzhen) Technology Co., Ltd Research Platinum Brand Soft Magnetic Absorbing MaterialsIn the research and development process, various methods are used to adjust and synergistically optimize the magnetic permeability and dielectric constant. These technological means have laid a solid foundation for the application of soft magnetic absorbing materials in fields such as electromagnetic protection and stealth, and have also provided valuable experience and technical references for the research and development of related materials in the future, promoting the continuous development of soft magnetic absorbing material technology.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.