The Curie Temperature is the temperature at which certain materials, known as ferromagnets, lose their permanent magnetic properties. Above this temperature, the thermal energy disrupts the alignment of magnetic moments, causing the material to become paramagnetic. This means that the material can still be magnetized in the presence of an external magnetic field, but it will not retain that magnetization once the field is removed. The concept is named after the physicist Marie Curie, who conducted significant research on magnetism and radioactivity. Common ferromagnetic materials, such as iron, nickel, and cobalt, have specific Curie Temperatures, which are critical for applications in electronics and magnetic storage devices.