A rod magnet is a type of permanent magnet or magnetic assembly that is shaped like a cylindrical rod. It has a magnetic length larger than their diameter, and it is often used in industrial, scientific applications and teaching, such as in sensors and separators.
The magnetization direction is usually north pole at one end and south pole at the other. And the magnetic bar component has a more complex magnetic circuit.
It can be made from various magnetic materials, including neodymium, samarium cobalt, alnico and ferrite. The strength of a rod magnet depends on its size and the type of magnetic material used to make it.