AlNiCo Bar Magnet

AlNiCo bar magnet is a type of permanent magnet made from aluminum, nickel, cobalt, and iron. Its name is derived from the primary elements of the alloy: aluminum (Al), nickel (Ni), and cobalt (Co).

Known for its excellent temperature stability and reliable magnetic performance, AlNiCo magnets can maintain stable magnetic properties even at high temperatures, making them suitable for demanding industrial and electronic applications.

Compared with sintered neodymium magnets and samarium cobalt magnets, AlNiCo magnets are more sensitive to demagnetization fields.

The bar magnet form is defined by its geometry, where the distance between the two poles is greater than the dimensions of the pole faces, typically specified by length (L), width (W), and thickness (T).

AlNiCo bar magnets are commonly used in applications such as guitar pickup magnets and educational purposes in schools.

The equivalent magnetic charge method can be used to calculate the permeance coefficient (Pc) of a bar magnet, where W, T, L, and Le are the width, thickness, physical length, and effective length of the magnet, respectively. The physical length L of the bar magnet will not always be served in the formula. The Le of a Neodymium magnet, a Samarium Cobalt magnet, or a ceramic magnet is assumed to be equal to L. Because of its low coercivity, AlNiCo bar magnets have a higher rec. Each grade of AlNiCo has a different rec and thus a different effective length factor k. Because it is longer in the magnetization direction than in the pole face dimension, the AlNiCo bar magnet is ideal for limiting self-magnetization.

Permeance Coefficient Calculator

1.The equivalent magnetic charge method is used in the calculations.

2.The calculator's effective length factor k refers to Arnold Magnetic Technologies.

3.The calculation results are only for reference purposes.

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