The general formula MO-6Fe2O3 describes the chemical composition of ferrite(ceramic) permanent magnets,where M generally represents barium or strontium or any combination of the two.
　　 They are generally formed by a compression or extrusion molding technique which is then followed by sintered.The material to be molded can be in eiher a dry powder or wet slurry form.Ferrite has highter coercive force and highter resistance to be demagnetized and oxidized than other non-rare earth permanent magnets.
　　The biggest advantage of Ferrite magnets.It is widely used speaker magnets,DC brushless motors,magnetic Resonance Imaging (MRI),magnetic assemblies designed for lifting, holding, retrieving and separating, from motors and craft . 　　

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Attributes of Cermaic Material
High intrinsic coercive force

Tooling is expensive

Limited to simple shapes due to manufacturing process

Finishing requires diamond cutting or grinding wheel

Applications of Ceramic Magnets
Speaker magnets
Magnetos
DC brushless motors

Reed switches

Separators
Magnetic Resonance Imaging (MRI)

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