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2. Electropermanent magnet - Wikipedia

   en.wikipedia.org/wiki/Electropermanent_magnet

   An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...

3. Halbach array - Wikipedia

   en.wikipedia.org/wiki/Halbach_array

   A Halbach array (German:) is a special arrangement of permanent magnets that augments the magnetic field on one side of the array while cancelling the field to near zero on the other side. [ 1 ] [ 2 ] This is achieved by having a spatially rotating pattern of magnetisation.

4. Horseshoe magnet - Wikipedia

   en.wikipedia.org/wiki/Horseshoe_magnet

   The shape of the magnet was originally created as a replacement for the bar magnet as it makes the magnetic field stronger for a magnet of comparable strength. [5] A horseshoe magnet is stronger because both poles of the magnet are closer to each other and in the same plane which allows the magnetic lines of flux to flow along a more direct path between the poles and concentrates the magnetic ...

5. Neodymium magnet - Wikipedia

   en.wikipedia.org/wiki/Neodymium_magnet

   Ring magnets Most hard disk drives incorporate strong magnets This manually-powered flashlight uses a neodymium magnet to generate electricity Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the ...

6. Programmable magnet - Wikipedia

   en.wikipedia.org/wiki/Programmable_magnet

   For the small size applications, correlated magnets can be used in positioning devices, consumer electronics, magnetic couplings, and vehicle attachment. [4] Potential applications include attach and release work-holding mechanisms, magnetic separators, fluid seals and valves, motor and motion control, factory automation, prosthetics, security devices, and power generation.

7. Rare-earth magnet - Wikipedia

   en.wikipedia.org/wiki/Rare-earth_magnet

   Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.