magnets from Magengine Co., Ltd - Magengine - #17

The length of the path of the central flux line in the air-gap.

An assembly consisting of some or all of the following: permanent magnets, ferromagnetic conduction elements, air gaps, electrical currents.

The total magnetic induction over a given area. When the magnetic induction, B, is uniformly distributed over an area A, 0=BA. The general equation is 0= ! ( B • dA.

The magnetomotive force per unit length at any point in a magnetic circuit. Measured in oersteds in the cgs system.

The point

on the Demagnetization Curve where the product of B and H is a maximum and the required volume of magnet material required to project a given energy into its surroundings is a minimum. Measured in Mega Gauss Oersteds, MGOe.

The direction in which an anisotropic magnet should be magnetized in order to achieve optimum magnetic properties. Also known as the "axis" , "easy axis" , or "angle of inclination" .

Residual Induction, Br: This is the point at which the hysteresis loop crosses the B axis at zero magnetizing force, and represents the maximum flux output from the given magnet material. By definition, this point occurs at zero air gap, and therefore cannot be seen in practical use of magnet materials.

Reversible Temperature Coefficient: A measure of the reversible changes in flux caused by temperature variations.

The condition under which all elementary magnetic moments have become oriented in one direction. A ferromagnetic material is saturated when an increase in the applied magnetizing force produces no increase in induction. Saturation flux densities for steels are in the range of 16,000 to 20,000 Gauss.