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What are the main classifications of absorbing materials?

Author:admin   AddTime:2021-08-13

Do you know what absorbing materials let us talk about now.

The loss mechanism of absorbing materials can be roughly divided into the following categories:

Absorbing materials --- First of all, resistive loss is the resistance loss related to the conductivity of this absorption mechanism, that is, the greater the conductivity, the greater the macroscopic current (including the current caused by the change of electricity). The magnetic field and the eddy current caused by the change of the magnetic field are caused by the carrier to facilitate the conversion of electromagnetic energy into thermal energy.



Absorbing material-Second, dielectric loss is a dielectric loss absorption mechanism related to the electrode, that is, through the "friction" effect caused by repeated polarization of the medium, the electromagnetic energy is converted into thermal energy for consumption and dissipation. The dielectric polarization process includes: electron cloud displacement polarization, polar dielectric moment polarization, ferroelectric domain polarization and wall displacement.

Absorbing materials third, magnetic loss, this absorption mechanism is a kind of magnetic loss related to the dynamic magnetization process of ferromagnetic media. This loss can be subdivided into: hysteresis loss, whirling eddy current, damping loss and magnetic aftereffect. The main source is the magnetic domain turning, magnetic domain wall displacement and the inherent resonance of the magnetic domain similar to the hysteresis mechanism. In addition, the latest microwave loss mechanism of nanomaterials has now become a hot spot in the analysis of microwave absorbing materials.

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