1. When the electron spins, it produces magnetism, which is the real source of magnetism. As long as the electron's spin doesn't stop, the magnetism doesn't really disappear. When we were young we used to play with magnets a lot and it was fun. It can be adsorbed on any iron-containing object. Also, they attract and repel each other. We also know that there are positive and negative points on a magnet. Only if the two poles are the same will attract each other, otherwise, they will repel each other. But puzzlingly, the magnet never seems to lose its power.
2. The energy of the magnet is generated from the interaction of electric fields. When it comes to the source of magnetite's magnetic force, we have to talk about the magnetic field of the atomic unit. In fact, according to the magnetic field of the atomic unit, everything is magnetic. It's just that only iron and nickel can show that clearly. The structure of magnetite consists of iron and nickel. In fact, although everything is magnetic, only iron and nickel have a regular arrangement of magnetism. Other objects are scattered into a ball, and its magnetic force is in different directions, so the result basically does not show any magnetism. It should be pointed out that due to the strong "exchange coupling" between the electrons of the ferromagnetic material, after magnetization, even if the external magnetic field is removed, the internal magnetic domain of the ferromagnetic material will remain unchanged, thus showing magnetic properties on a macroscopic scale.
3. An atom consists of a nucleus and electrons, where the nucleus is positively charged and the electrons are negatively charged. Inside the atom, electrons are constantly moving around the nucleus, and at the same time, they are constantly spinning. This movement of electrons creates a magnetic field because a moving charge creates an electric current, which also creates a magnetic field. In most substances, due to the disordered motion of electrons, this magnetic effect produced by the electrons cancels each other out, thus exhibiting macroscopic non-magnetism. On the other hand, there is a strong interaction between the electrons of ferromagnetic materials - "exchange coupling", so that the magnetic fields they generate spontaneously unify in small areas, which we call "magnetic domains".
