Time:1/20/2021 12:40:48 AMauthor:source:
Permanent magnet-custom permanent magnet-strong magnetic neodymium iron boron magnet manufacturer-permanent strong magnet price
A permanent magnet is an object that can maintain its own magnetism for a long time without an external magnetic field. Permanent magnets can be made of ferromagnetic materials, such as iron and nickel.
Its atomic structure is special, and the atom itself has a magnetic moment. Generally, the molecules of these minerals are arranged chaotically, and the magnetic regions will not show magnetism due to the mutual influence of the magnetic regions. However, when the molecular arrangement direction tends to be the same under the guidance of external force such as a magnetic field, it will show magnetism, which is commonly known as magnets. Iron, cobalt, and nickel are commonly used. Magnetic substance.
The permanent magnet is to add strong magnetism to make the spin and electron angular momentum of the magnetic substance aligned in a fixed direction. Magnet is just a general term, which generally refers to magnetism, and the actual composition is uncertain including iron. The purer metallic iron itself has no permanent magnetism, and magnetism is induced only when it is close to the permanent magnet. Generally, other impurity elements such as carbon are added to the permanent magnet to stabilize the magnetism, but this will reduce the freedom of electrons. It is not easy to conduct electricity, so the bulb will not light up when the current passes. Many powerful magnets are made of neodymium, iron, boron, etc. Coercive force: permanent magnet materials resist magnetic and non-magnetic interference and maintain their permanent magnetism The measurement.
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