The following are three methods for enhancing the magnetic properties of a magnet:
For a circular magnet, adding an iron core in the center can strengthen its magnetism.
The method of concentrating magnetic field lines can be used; by attaching a magnetic conductive plate to the magnet, a stronger magnetic field will be generated at the edges and corners of the conductive plate.
Using a magnetizer to increase magnetism.
Increasing the magnetic powder content.
Adding a coil and applying current to increase magnetism.
Increasing the wire diameter and the number of turns in the electromagnet's coil; the more turns, the better.
