When studying the hybrid system of spherical magnet and non-magnetic materials, the penetration and distribution of the magnetic field is a complex and important topic.
First, when a spherical magnet is placed in a non-magnetic material, the magnetic field gradually penetrates outward from the surface of the magnet. Since the magnetic permeability of non-magnetic materials is similar to that of air, the magnetic field propagates relatively freely in them, but will gradually weaken as the distance increases. For example, if a spherical magnet is placed in a container filled with plastic particles, the plastic particles close to the magnet will be affected by a stronger magnetic field, and the further away, the smaller the effect. The distribution of the magnetic field shows a radial shape with the spherical magnet as the center, and its intensity gradually decreases in the radial direction.
Secondly, the shape and distribution of non-magnetic materials have a significant impact on magnetic field penetration. If the non-magnetic material is a uniform block, the magnetic field will penetrate relatively uniformly along its interior, except that certain refraction and scattering will occur at the boundaries. But if the non-magnetic material has a granular or porous structure, the penetration path of the magnetic field will become complicated. The magnetic field travels through the gaps between particles and microscopic channels within the material, causing local inhomogeneities in magnetic field strength. For example, in a mixed system of foam materials and spherical magnets, the pores of the foam will cause local convergence and divergence of the magnetic field.
Furthermore, the magnetic strength of the spherical magnet determines the depth and range of magnetic field penetration. A strong magnetic spherical magnet can generate an obvious magnetic field in a larger volume of non-magnetic material, and its magnetic field can penetrate to a longer distance, making the magnetic field effect of the entire hybrid system more significant. On the contrary, the magnetic field generated by a weakly magnetic spherical magnet attenuates faster in non-magnetic materials, and the magnetic field penetration range is smaller.
In addition, under dynamic conditions, such as when a spherical magnet moves or rotates in non-magnetic materials, the distribution of the magnetic field will change accordingly. This change can induce electromagnetic phenomena such as induced electromotive force, which can be used for energy conversion or sensor design in some application scenarios. For example, in a pipe containing a spherical magnet and non-magnetic fluid, when the magnet rotates with the flow of the fluid, the surrounding magnetic field distribution continuously changes. The flow rate or flow rate of the fluid can be measured by detecting this change.
Then, the temperature also affects the magnetic field of the mixed system of spherical magnet and non-magnetic materials. As the temperature increases, the magnetic properties of the spherical magnet may change, thereby affecting the strength and distribution of the magnetic field. In some high-temperature environment applications, it is necessary to consider this temperature effect, select appropriate spherical magnet materials or take temperature compensation measures to ensure the stability and predictability of the magnetic field.
Finally, studying the magnetic field penetration and distribution in a mixed system of spherical magnet and non-magnetic materials has important guiding significance for many fields such as electromagnetic shielding design, magnetic sensor development and the development of new electromagnetic materials, and will help to further expand the application of magnetic materials. Scope of application in engineering technology.
