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These materials are the only ones that can retain magnetization and become magnets; a common example is a traditional refrigerator magnet. Ferrimagnetic materials, which include ferrites and the longest used and naturally occurring magnetic materials magnetite and lodestone , are similar to but weaker than ferromagnetics.
A very common source of magnetic field found in nature is a dipole, with a "South pole" and a "North pole", terms dating back to the use of magnets as compasses, interacting with the Earth's magnetic field to indicate North and South on the globe. Since opposite ends of magnets are attracted, the north pole of a magnet is attracted to the south ...
This is because when the current through the magnet is increased, such as when it is turned on, energy from the circuit must be stored in the magnetic field. When it is turned off, the energy in the field is returned to the circuit. If an ordinary switch is used to control the winding current, this can cause sparks at the terminals of the ...
Ferrite particles are also used as a component of radar-absorbing materials or coatings used in stealth aircraft and in the absorption tiles lining the rooms used for electromagnetic compatibility measurements. Most common audio magnets, including those used in loudspeakers and electromagnetic instrument pickups, are ferrite
Magnetic alloys have become common, especially in the form of steel (iron and carbon), alnico (iron, nickel, cobalt, and aluminum), and permalloy (iron and nickel). So-called "neodymium magnets" are alloys of neodymium, iron and boron forming the crystal structure Nd 2 Fe 14 B.
Pages in category "Types of magnets" The following 31 pages are in this category, out of 31 total. ... This list may not reflect recent changes. B. Bitter ...
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This list may not reflect recent changes. ... Magnet; Magnet fishing; Magnet keeper; Magnet therapy; Magnetic 2D materials; Magnetic buoyancy; Magnetic complex impedance;
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