Basically includes anything the concept of magnetic in the absence of an external magnetic field is displayed when the magnetic material. Still someone use this concept. But through the different display deeper understanding of magnetic material and magnetic, scholars have made a more precise definition of this concept. A material point to which all magnetic ions in cells are called ferromagnetic magnetic direction. If only some of the ions of magnetic field pointing to the magnetic direction, it is called a ferrimagnetic. If it referred to exactly cancel each other out in the direction of the magnetic ions (despite all the magnetic ions only point in two opposite directions) are called antiferromagnetism.