Ferrite magnet
F Squared Magnetics

Ferrite (ceramic) magnets. These magnets are generally produced by pressing powder or slurry into a mould, firing in a kiln, and grinding the pressed depth to tight tolerances. To achieve the maximum performance for this material it has to be pressed in a magnetic field, this determines the final direction of magnetisation. This is known as anisotropic.
Tooling charges for special shapes or sizes are very high and it is advisable, where possible, to use a standard, already tooled, shape, unless quantities are very high, 100, 000 or more.
The most common magnets are of rectangular or square shaped and can be produced by cutting or slicing from large standard blocks.
Typical Bhmax range 6.4 to 33 kJ/m³ (0.8 to 4.2 MGOe)