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Absorbing material parameters-magnetic permeability

Author:admin   AddTime:2021-03-25

A simple understanding of absorbing materials refers to functional materials that can absorb and attenuate the electromagnetic wave energy incident in space, and reduce or eliminate reflected electromagnetic waves. It is generally composed of a matrix material and a good medium.

Absorbing material parameters-magnetic permeability



Permeability represents a physical quantity of the magnetization properties of a material, and is often represented by the symbol μ. Magnetic permeability is the main parameter that distinguishes absorbing materials both domestically and internationally. For a static (alternating) magnetic field, the permeability is the ratio of the (alternating) magnetic induction intensity B to the magnetic field intensity H in a substance, also known as absolute permeability. The ratio of the absolute permeability of the substance to the permeability of the vacuum is called the relative permeability, which is the permeability in our general sense. For an alternating magnetic field, the permeability is generally a complex number. The permeability at a certain frequency that we usually refer to generally refers to the real part of the permeability, which represents the absorption of electromagnetic waves, and the imaginary part represents the loss.

Is the higher the permeability of the absorbing material, the better? The actual effect is not directly related to the magnetic permeability. It needs to be designed according to the application scenario and scheme, and the test sample debugging and selection are better.

Absorbing Material:https://www.goodsmaterial.com/

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