Permanent magnets are fascinating materials that can retain their magnetic strength for centuries if kept under the right conditions. Their secret lies in the stable alignment of magnetic domains at the atomic level, which remain locked in place over time. Factors such as material type, temperature, and exposure to external magnetic fields play a key role in determining their longevity. Magnets made from samarium-cobalt or alnico can stay magnetized for hundreds or even thousands of years if not
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