Why is steel called a hard magnetic material?
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When a nonmagnetic piece of steel is applied to a magnet, the atoms within it rearrange themselves in a manner that creates a permanent magnet. As the atoms become aligned, they create a magnetic field that doesn't lose its strength
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Magnetically hard materials can be permanently magnetized by a strong magnetic field.... Steel and special alloys, which contain various amounts of aluminum, nickel, cobalt, and copper, are used to make permanent magnets.
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