Why do powerful magnet magnetic?

Powerful magnet material is mostly made up of molecules, the molecules are made of atoms, atoms are composed of atomic nuclei and electrons. From inside the atom, the electronic constant rotation, and rotate around the nucleus. These two movement produces magnetic electrons. But in most materials, electronic movement in the direction of each are not identical, desultorily, magnetic cancel each other out. Therefore, most material under normal circumstances, do not present magnetic.

Such as iron, cobalt, nickel or ferrite ferromagnetic kind material is different, its internal electron spin can spontaneously lined up in a small scope, forming a spontaneous magnetization, the spontaneous magnetization area is called magnetic domain. Ferromagnetic kind material after magnetization, internal magnetic domain uniformly lined up neatly, direction, make the magnetic strengthen, constitute a powerful magnet iron. Powerful magnet iron absorption process is the magnetization process of iron, the magnetized iron and powerful magnets have different polarity attraction, iron and is a powerful magnet "stick" together. He is said to be a strong magnet magnetic.

Powerful magnet measure over the next 20 to 30 years, will not be able to have alternative magnetic materials, strong magnet is also a "strong magnetic rare earth", also means a strong magnet,

Magnet has the characteristics of small volume, light weight and strong magnetic, function is by far the price than the best magnet, permanent magnet materials consumption of main raw material with rare earth metal neodymium, praseodymium metal, pure iron, aluminum, boron alloy technology, and other rare earth raw material industry as the main body now on the manufacturing process, detailed body now the average, differences of their products, the processing quality and coating quality, etc. Magnet as the third generation of rare earth permanent magnet materials, has the very high function price ratio, its widely used in power, transportation, machinery, medical, IT, home appliances and other industries, especially with the development of information technology represented by knowledge economy, the function of rare earth permanent magnet industry information brings new USES, from time to time for the industry with more broad market prospects,

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