Ferrite is strontium hexaferrite SrO-6 (Fe203), which is an alloy made of strontium carbonate and iron oxide.
Ferrite magnets are also known as 'ceramic magnets' due to their brittle nature being very similar to porcelain.
One type of ferrite magnet is a flexible magnet. This is where the alloy of strontium carbonate and iron oxide is mixed with rubber to make a magnet which can be coiled into a 6.35mm (0.25") to 25mm (0.98") radius without damaging the magnetic abilities of the magnet.
ADVANTAGES
Cheap to manufacture
Can work in high temperatures
Corrosion resistant
Low cost
DISADVANTAGES
Hard and brittle so can break easily
Demagnetises at -10°C to -20°C
