Ferrites are a class
of chemical compounds with the formula
AB2O4, where A and B represent various
metal cations, usually including iron.
They are generally composed of iron and
barium or strontium oxides. Ferrite
magnets are very hard, but brittle
ceramic products. They are characterized
by a vey high normal and intrinsic
coercive force, but a rather low
residual induction and are virtually
free from the effects of a
self-demagnetization. They posses a very
high electrical resistivity that makes
them ideally suited for high frequency
applications as the eddy current losses
are almost negligible.
property of ferrite is very good and as
such ni surface treatments are required.
Ferrite magnets are
prone to chipping ad cracking due to
their brittleness. Special machining
techniques such as grinding with diamond
tools are required for matching the