Ceramic magnets are also called ferrite magnets or craft magnets and have been a scientific subject of research since the 20th century. In the course of time, two types of ceramic magnets have been developed: soft and hard ferrites, which differ mainly in their composition. While soft ferrites have a low coercive field strength, that of hard ferrites is stronger. The higher the coercivity, the better the ability of a magnet to maintain its magnetization when exposed to an opposing magnetic field.