The force exerted by magnets when they attract or repel each other is known as magnetism. The movement of electric charges causes magnetism. Another strongly magnetic substance must enter the magnetic field of an existing magnet to get magnetised. The magnetic field is the magnetically charged area surrounding a magnet.
Materials that exhibit more than one of the primary ferroic properties in the same phase are known as multiferroics. Multiferroic materials serve an important role in the development of systems with high magnetoelectric coupling, in which magnetization or polarisation can be manipulated by applying an electric or magnetic field, respectively.