What is the maximum magnetic field strength of ceramic ferrite?
Ferrite permanent magnet(ceramic ferrite) also known as ferrite magnet steel, is usually we see the small black magnet. Its main raw materials are iron oxide, barium carbonate or strontium carbonate. When magnetized, the residual magnetic field is strong and can be retained for a long time. It is usually used as a permanent magnet material.
Ferrite magnets, most of which are used on speakers, are shown below.
What is the highest magnetic value of a ferrite magnet?