Characteristics and Main Parameters of Permanent-Magnetic Materials

The permanent-magnetic material belongs to hard-magnetic material. It is characterized with "fat" hysteresis loop, which encloses large area as shown in the figure. When magnetized, it keeps high magnetic property with the external magnetic field removed, therefore is used in the permanent-magnet electric machine to produce magnetic field. The characteristics of the permanent-magnetic material are represented with its main parameters: residual flux density B_r, coercive field force H_c and maximum magnetic energy product (BH)_max.

"Fat" Hysteresis Loop

Related Topics 

Demagnetization Curve

Recoil Lines

Calculating the Properties for a Permanent Magnet

Calculating the Properties for a Nonlinear Permanent Magnet

Calculating Properties Using a Hysteresis Loop in Maxwell

Temperature Dependent Nonlinear Permanent Magnets