Magnetic Materials.

Explore permanent magnets and soft magnetic materials.

6 product families

Compact circuits: review magnet temperature, demagnetization margin and coating.

Thermal stability: define the temperature range, opposing field and edge requirements.

Ceramic motor magnets: specify arc geometry, air gap and magnetic direction.

Stable working circuits: match the operating gap, return path and calibration.

Converted sheets and strips: define laminate thickness, pole pitch and adhesive.

Changing fields: start with frequency, flux swing and core loss.

RETAIN A MAGNETIC FIELD

Permanent Magnets

Five material families for force, motion and sensing.

GUIDE A CHANGING FIELD

Review frequency, flux swing, bias and core loss.

SELECTION TRADE-OFFS

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Initial selection considerations
Material	Useful starting point	Review first
NdFeB	Compact magnetic circuits	Temperature, corrosion protection and demagnetization margin
SmCo	Thermally demanding magnetic circuits	Material family, brittleness and magnetic working point
Ferrite	Volume applications with room for a larger magnet	Available space, magnetization and mechanical handling
AlNiCo	Stable-flux instruments and defined magnetic circuits	Geometry, air gap and demagnetizing fields
Flexible Magnets	Conforming sheets, strips and converted parts	Contact conditions, pole pattern, backing and adhesion

Soft magnetic cores are selected by electrical duty and core loss, rather than permanent-magnet energy product.

APPLICATION REVIEW

Send the working point, temperature and exposure requirements.