Ferrite magnet is also called ceramic magnet. When the tension is not the most important factor, ferrite magnet has high cost performance. They have high corrosion resistance and demagnetization and can work at temperatures up to 200 degrees Celsius.
The direction of magnetization is thickness magnetization, and the north and south poles are on the square surface of the relative 50mm x 50mm.
Ferrite has good anti-degaussing and corrosion ability, so no additional coating is needed.