Iron, Cobalt, Nickel, and Gadolinium.
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The four main magnetic metals are iron, nickel, cobalt, and gadolinium. These metals have unique properties that allow them to be attracted to magnets and retain their magnetism once magnetized.
No, aluminum sheet metal is not magnetic.
Inside a metal, the atoms align in a specific way, creating magnetic domains. When an external magnetic field is applied, these domains align in the same direction, making the metal magnetic. This alignment creates a magnetic field around the metal.
Metal is magnetic due to the alignment of its electrons in a way that creates a magnetic field. This alignment allows the metal to be attracted to magnets or generate its own magnetic field. The presence of unpaired electrons in the metal's atomic structure also contributes to its magnetic properties.
One example of a non-magnetic metal is aluminum. It does not have magnetic properties because its atoms do not align in a way that creates a magnetic field.
To magnetize metal, you can rub a magnet along the metal in one direction multiple times. This will align the magnetic domains in the metal, making it magnetic.