Balance strategy of real and imaginary parts of magnetic permeability in high permeability absorbing materials

1. Introduction

Magnetic permeability is a physical quantity that describes the response characteristics of materials to magnetic fields, consisting of real and imaginary parts. The real part of magnetic permeability reflects the material's ability to store magnetic energy, while the imaginary part represents the material's ability to lose magnetic energy. For absorbing materials, the ideal magnetic permeability characteristics should be able to effectively absorb electromagnetic wave energy (high imaginary part) and provide sufficient reflection suppression within a certain frequency band (appropriate real part). Therefore, in the design and developmentHigh permeability absorbing materialWhen doing so, it is necessary to consider the balance between the two.

2. Factors affecting the real and imaginary parts of magnetic permeability

2.1 Material composition

Different types of magnetic substances such as ferrite, metal micro powders, nanoparticles, etc. can affect the real and imaginary parts of magnetic permeability. For example, ferrites typically exhibit higher real part values but relatively lower imaginary parts; On the contrary, some metal micro powders can increase the imaginary part value but may decrease the real part.

2.2 Structural Design

The design of microstructure is also crucial. Multilayer composite structures or periodically arranged micro nano structures can regulate the propagation path of electromagnetic waves, thereby changing the effective magnetic permeability of materials. In addition, factors such as porosity and particle size distribution can significantly affect the real and imaginary parts of magnetic permeability.

2.3 Process Parameters

The temperature, pressure, sintering time, and other conditions in the manufacturing process not only determine the density and crystallinity of the material, but also directly affect the real and imaginary parts of the magnetic permeability. Optimizing these process parameters can help achieve better performance balance.

3. Balance strategy

3.1 Composite Material Methods

By mixing different magnetic materials, it is possible to enhance the imaginary part while maintaining a higher real part. For example, by combining ferrite with carbonyl iron powder, an absorbing material with both excellent absorption performance and good reflection suppression ability can be obtained.Advanced Institute (Shenzhen) Technology Co., LtdIn the process of developing platinum brand high permeability absorbing materials, this composite material method was adopted to achieve the best results.

3.2 Microstructure control

By utilizing advanced nanotechnology to construct microstructures with special shapes and arrangements, the real and imaginary parts of magnetic permeability can be effectively adjusted. For example, introducing multi-level structures or designing them in honeycomb or spiral forms can enable materials to exhibit excellent absorption performance over a wide frequency range.

3.3 Parameter Optimization

By combining computer simulation and experimental verification, various process parameters during the preparation process are finely adjusted to ensure that the real and imaginary parts of the magnetic permeability of the final product are in an ideal state. Advanced Institute (Shenzhen) Technology Co., Ltd. has also utilized machine learning algorithms to assist in data analysis, further improving research and development efficiency and product quality.

4. Application case analysis

4.1 Military stealth technology

In the military field, it is required that absorbing materials can achieve efficient electromagnetic wave absorption over a wide frequency range.Research Platinum brand high magnetic permeability absorbing materialWith excellent real imaginary balance characteristics, it has been applied to the surface coating of stealth aircraft, effectively reducing radar cross section (RCS) and enhancing stealth effect.

4.2 Wireless Communication Equipment

With the arrival of the 5G era, miniaturized, lightweight, and high-performance absorbing materials have become the ideal choice for components such as wireless base station antenna covers and mobile phone casings. Yanbo brand products ensure the quality of signal transmission and reduce unnecessary electromagnetic interference by precisely controlling the real and imaginary parts of magnetic permeability.

4.3 Automotive Electronic Systems

Modern cars are equipped with a large number of electronic products and require effective EMC protection measures.Research Platinum brand high magnetic permeability absorbing materialProvided a reliable shielding solution for onboard radar, sensors, etc., without affecting their functionality.

5. Conclusion

In summary, balancing the real and imaginary parts of magnetic permeability is crucial for developing high-performance absorbing materials. By selecting appropriate material compositions, carefully designing microstructures, and optimizing production process parameters, specific needs in different application scenarios can be met. Advanced Institute (Shenzhen) Technology Co., Ltd. and its platinum brand high permeability absorbing materials have made significant achievements in this field, and will continue to explore more innovative technologies and methods in the future to promote continuous progress and development in this field.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.