![]() The rare-earth metals neodymium and samarium are less common examples. ![]() ![]() Only a few substances are ferromagnetic the most common ones are iron, cobalt and nickel and their alloys. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Magnetism is one aspect of the combined phenomena of electromagnetism. ![]() Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. ![]()
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