High performance car speaker magnets

High performance car speaker magnets

Sintered ferrite (ceramic) magnets are also available in forms of isotropic and an-isotropic. The magnetic properties

of isotropic ferrite are the same in all directions, therefore they can be magnetized in any pole arrangements.

An-isotropic ferrite magnets, on the other hand, can only be magnetized in the direction they are oriented during production,

but they have much higher magnetic strength than isptropic ones.  

Permanent ferrite magnet

Characteristics

Sintered ferrite magnets can be used in between -40 °C and +200 °C  Being hard and brittle, they can be cut by using diamond tools.
The raw material of sintered ferrite magnets is oxide, thus they would not be rusted under severe environment nor affected by many chemicals (except some strong acids).  Ring ferrite magnet