Why can a magnet attracts iron?

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Substances are mostly composed of molecules, molecules are made up of atoms, atomic nuclei and electrons is again. Inside the atomic, electronic kept rotation,And rotate around the nucleus. Both the electron motion will generate a magnetic. However, in most substances, the electron motion is not the same in each direction, disorganized, magneticEffects offset each other. Thus, under normal circumstances most substances, without showing magnetic properties.suspension magnet

Iron, cobalt, nickel or ferrite ferromagnetic substances is different, its internal electron spin in a small area can spontaneously arranged together to form a spontaneous magnetizationArea, this area is called spontaneous magnetization magnetic domains. magnetic filter
Magnetization of ferromagnetic substances, the internal magnetic domain neat, arranged together in the same direction, the magnetic strengthened to construct

Into a magnet. Magnet attracts iron on iron magnetization process is the process of magnetized iron and magnets of different polarity between the attraction, the magnetic iron it firmly

Iron "stick" together. We say that a magnet has a magnetic