demagnetisaatio

Demagnetisation is the process of reducing or eliminating the magnetic properties of a magnetized material. This can be achieved through several methods, primarily by exposing the material to heat, a strong opposing magnetic field, or mechanical shock. Heating a magnet above its Curie temperature, the point at which a material loses its ferromagnetic properties, will demagnetise it. Alternatively, applying a magnetic field in the opposite direction to the material's existing magnetisation, and then gradually reducing its strength to zero, can also effectively cancel out the original magnetism. Mechanical stress or repeated impacts can disrupt the alignment of magnetic domains within a material, leading to a loss of overall magnetism. The effectiveness of demagnetisation depends on the material's properties and the chosen method. Demagnetisation is often employed in scientific research, industrial processes, and for restoring or preparing magnetic media.