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What are the classifications of the loss mechanism of absorbing materials

Author:admin   AddTime:2021-05-22

What are the loss mechanisms of absorbing materials?

The loss mechanism of absorbing materials is mainly divided into the following three categories:

1. Magnetic loss. This type of absorption mechanism is a type of magnetic loss related to the dynamic magnetization process of ferromagnetic media, which can be refined into: hysteresis loss, damping loss, gyromagnetic eddy current, and magnetic aftereffect, etc. The main source is Similar to the hysteresis mechanism, magnetic domain turning, magnetic domain wall displacement, and magnetic domain natural resonance, etc. In addition, the latest microwave loss mechanism of nanomaterials is a hot spot in the analysis of current absorbing materials.



Second, resistive loss, this kind of absorption mechanism and the resistive loss related to the conductivity of the material, the greater the conductivity, the greater the macro current caused by carriers, which is beneficial to the conversion of electromagnetic energy into thermal energy.

Third, dielectric loss, which is a type of dielectric loss absorption mechanism related to electrodes, is to convert electromagnetic energy into thermal energy dissipation through the "friction" effect produced by repeated polarization of the medium. The dielectric polarization process includes: electron cloud displacement polarization, polar dielectric moment turning polarization, electric ferrite domain turning polarization, and wall displacement.

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