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permanent ferrite are made of , which have a high and high after magnetization.
These are composed of iron oxide and or carbonate. The high coercivity means the
materials are very resistant to becoming demagnetized, an essential characteristic for
a permanent magnet. They also conduct well and have a high .
This enables these called to store stronger than iron itself. They are cheap,
and are widely used in household products such as .
The maximum magnetic field is about 0.35 and the magnetic field strength is about 30 to 160 kiloampere turns per meter (400 to 2000 )
The density of ferrite magnets is about 5g/cm.
Density - 0.180 lbs per cubic inch ·
Sizes - sintered ferrites can be manufactured in blocks up to about 10" x 4" x 1".
Extruded Ferrite (otherwise known as Flexible magnets) can be extruded in unlimited lengths.
The energy product of Flexible magnets is, however, much lower than that of fully dense, Sintered Ferrite magnets.
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