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A permanent magnet is an object made from a material that is magnetized and ... For example, for a long, skinny bar magnet with its north pole at one end and ...
The metal bar (bottom) is a keeper ... Alnico magnets are widely used in industrial and consumer applications where strong permanent magnets are needed. Examples are ...
An example of a permanent magnet formed from a ferromagnetic material is a refrigerator magnet. [ 2 ] Substances respond weakly to three other types of magnetism— paramagnetism , diamagnetism , and antiferromagnetism —but the forces are usually so weak that they can be detected only by lab instruments.
It has been widely used in industrial applications as permanent magnets and, because they can be powdered and formed easily, they are finding their applications into micro and nano-types systems such as biomarkers, bio diagnostics and biosensors. [34] Barium ferrite Ba Fe 12 O 19 (Ba O · 6 Fe 2 O 3), a common material for permanent magnet ...
Magnetic domain structure is responsible for the magnetic behavior of ferromagnetic materials like iron, nickel, cobalt and their alloys, and ferrimagnetic materials like ferrite. This includes the formation of permanent magnets and the attraction of ferromagnetic materials to a magnetic field.
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.
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