Can magnets lose their magnetism over time?

Yes, magnets can lose their magnetism over time. This is often referred to as magnet decay or demagnetization. Several factors can contribute to this process, including exposure to high temperatures, physical impact or vibration, and the presence of other magnetic fields. High temperatures can cause the atoms within the magnet to vibrate, leading to a loss of alignment and a weakened magnetic field. Similarly, physical impact or vibration can disrupt the alignment of the magnetic domains within the magnet, resulting in a decrease in magnetism. Additionally, exposure to strong external magnetic fields can also interfere with the alignment of the domains and lead to demagnetization. Consequently, it is essential to handle magnets with care, avoid extreme temperatures, and store them away from other magnets or magnetic materials to prevent or minimize magnet decay.