The most powerful magnets are typically made from materials that exhibit ferromagnetic properties, and among these, neodymium magnets (often called NdFeB magnets) are considered the strongest. Neodymium magnets are composed of an alloy of neodymium, iron, and boron. They have a very high magnetic strength and are widely used in various applications, including motors, generators, and magnetic resonance imaging (MRI).
In terms of naturally occurring magnetic materials, magnetite is one of the strongest, but it does not compare to the strength of synthetic neodymium magnets.
Overall, for industrial and practical applications, neodymium magnets are currently regarded as the most powerful magnetic materials available.
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