What are hard magnetic materials and soft magnetic materials?
A hard magnetic material, or permanent magnet, refers to a material that can remain magnetized for a long time after magnetization
There is a common high carbon steel, aluminum nickel cobalt alloy, titanium cobalt alloy is used in magnetic recording, such as audio tapes, video tapes, computer disk powder soft magnetic material which can not maintain the original magnetization and magnetic. Such as iron, silicon steel, iron nickel alloy. Used in the manufacture of transformer, electromagnetic iron etc.
