Will the magnetism of the magnet disappear?

Yangquan Yanhe Magnetic Technology Co., Ltd. is a high-tech magnet manufacturer integrating R&D, production and sales, specializing in the production of magnets, AlNiCo, NdFeB, Samarium Cobalt, ferrite permanent magnet materials and their products.

Will the magnetism of the magnet disappear? As with all magnetic materials, not all magnetic materials are magnetic at all temperatures. Generally, magnetic materials have a critical temperature Tc above which, due to the intense thermal motion of atoms at high temperatures, the arrangement of atomic magnetic moments is disordered. Below this temperature, the atomic magnetic moments are aligned, spontaneous magnetization occurs, and the object becomes ferromagnetic. How to restore the magnetism: The magnetism will disappear when heated and raised to above the Curie temperature of the magnet material, and the magnetism will recover after cooling. The permanent magnet is ferric oxide, as long as it is reduced to ferrous oxide or iron, or oxidized to ferric oxide, the magnetic field will disappear.

The same poles repel each other and the opposite poles attract each other. When two magnets are close to each other, they will repel each other with the same polarity and attract each other with opposite polarities. From this, it can be inferred that the reason why the two ends of the freely rotating needle magnet manufacturer can point to the north-south direction of the earth is because the earth itself is a large magnet. The north pole of the earth magnet is adjacent to the earth's geographic south pole, and the earth's south pole is adjacent to the north pole in terms of geographic location.