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The attraction of neodymium iron boron magnets is determined by the characteristics of the magnet. If explained by the atomic current, the magnetic field generated by the current magnetizes other objects. The magnetized objects generate electric fields, and the electric fields interact to produce force.
Most matter is composed of molecules. Molecules are composed of atoms, and atoms are composed of nuclei and electrons. Inside the atom, the electron rotates continuously and revolves around the nucleus. Both of these movements of electrons produce magnetism. But in most substances, the directions of electrons are different and chaotic, and the magnetic effects cancel each other out. Therefore, most materials do not exhibit magnetism under normal conditions.
Ferromagnetic materials such as iron, cobalt, nickel, or ferrite are different. The electron spins in it can spontaneously arrange in a small range to form a spontaneous magnetization zone. This spontaneous magnetization zone is called a magnetic domain. After the ferromagnetic substance is magnetized, the internal magnetic domains are arranged neatly and aligned in the same direction to strengthen the magnetism and form a magnet. The magnetization process of the magnet is the magnetization process of the iron block. The magnetized iron block and the magnet with different polarities generate attractive force, and the iron block is firmly "sticked" with the magnet. We say that magnets are magnetic.
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