Types of Ferro magnetic materials (Ferromagnetic materials) is set to a positive number. There is a value in the range of 50 – 100,000 are more magnetic than other materials because of the Interior, a magnetic domains (Magnetic Domain) when an external magnetic field with the material will have an induction causes a magnetic field has a value increase. Examples of materials at room temperature of steel, cobalt, nickel and nickel alloy material with Earth (Rare Earth), heat-sealing, these.
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