What is ferromagnetic material?
Magnetic materials are difficult to be divided into soft magnetic materials and hard magnetic materials after magnetization. It is easy to remove the magnetic material after magnetization. It is called soft magnetic material, and the material which is not easy to be magnetized is called hard magnetic material. Generally speaking, soft magnetic materials have less remanent magnetism, and hard magnetic materials have larger remanence.
A substance that produces magnetism directly or indirectly by excessive elements such as iron, cobalt, nickel, and their alloys.
