Koercitiivisyyteen
Koercitiivisyyteen, often translated as coercivity, is a fundamental property of ferromagnetic materials that describes their resistance to becoming demagnetized. It quantifies the strength of the magnetic field that must be applied in the opposite direction to reduce the magnetization of a material to zero after it has been saturated. Materials with high coercivity are considered hard magnetic materials and are difficult to magnetize and demagnetize. Conversely, materials with low coercivity are soft magnetic materials and are easily magnetized and demagnetized.
The phenomenon of coercivity is closely related to the magnetic domain structure within a material. Magnetic
Hard magnetic materials, characterized by high coercivity, are used in applications requiring permanent magnets, such as