Magnetics

Magnetics

The branch of materials science that studies magnetism and its applications.

Industry: Materials science

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Magnetics

Gradient

Materials science; Magnetics

Indicates the change in magnetic strength between points measured at different distances perpendicular to the magnetic field.

Coercive force (HC)

Materials science; Magnetics

The demagnetizing force or intensity of a magnetic field, measured in Oersteds, required to reduce observed induction, B, to zero after the magnet has previously been brought to saturation.

Demagnetization force

Materials science; Magnetics

A magnetising force, typically in the direction opposite to the force used to magnetise it in the first place. Shock, vibration and temperature can also be demagnetizing forces.

B/H curve

Materials science; Magnetics

The result of plotting the value of the magnetic field (H) that is applied against the resultant flux density (B) achieved. This curve describes the qualities of any magnetic material.

Air gap

Materials science; Magnetics

The distance between the north and south poles of a magnetic circuit. In conducting pull tests this is the distance between the working surface of the magnet and the testing apparatus.