Magnetics

Magnetics

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

Contributors in Magnetics

Magnetics

Most neodymium magnets are plated or coated in order to protect the magnet material from corrosion. Neodymium magnets are mostly composed of neodymium, iron, and boron. The iron in the magnet will ...

Permeability (µ)

Materials science; Magnetics

The ratio of the magnetic induction of a material to the magnetising force producing it (B/H). The magnetic permeability of a vacuum (µ o ) is 4π×10 -7 N/Amp 2 .

Permeance (P)

Materials science; Magnetics

A measure of relative ease with which flux passes through a given material or space. It is calculated by dividing magnetic flux by magnetomotive force. Permeance is the reciprocal of reluctance.

Paramagnetic materials

Materials science; Magnetics

Materials that are not attracted to magnetic fields (wood, plastic, aluminum, etc.). A material having a permeability slightly greater than 1.

Permanent magnet

Materials science; Magnetics

A magnet that retains its magnetism after it is removed from a magnetic field. A permanent magnet is "always on". Neodymium magnets are permanent magnets.

Polarity

Materials science; Magnetics

The characteristic of a particular pole at a particular location of a permanent magnet. Differentiates the North from the South Pole.

Hysteresis loop

Materials science; Magnetics

A plot of magnetising force versus resultant magnetization (also called a B/H curve) of the material as it is successively magnetised to saturation, demagnetized, magnetised in the opposite direction ...