The metals iron, cobalt and nickel, and certain alloys are vastly more magnetic than any other known substance; these metals are said to be ferromagnetic. They possess magnetic properties in the absence of a magnetic field.
A term meaning magnetic properties of iron. A material does not have to have iron in it to be ferromagnetic, such as most ferrites. The main property of a ferromagnetic material is its strong affinity for concentrating and magnifying a magnetic field formed by electric current flow into magnetic flux.
The ability to become highly magnetic and have the ability to retain a permanent magnetic moment. The elementary magnetic dipoles inside the domain are all oriented in a direction parallel to each other.