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2. Single domain (magnetic) - Wikipedia

   en.wikipedia.org/wiki/Single_domain_(magnetic)

   [a] Such particles are very small (generally below a micrometre in diameter). They are also very important in a lot of applications because they have a high coercivity. They are the main source of hardness in hard magnets, the carriers of magnetic storage in tape drives, and the best recorders of the ancient Earth's magnetic field (see ...

3. Magnetic core - Wikipedia

   en.wikipedia.org/wiki/Magnetic_core

   A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets, transformers, electric motors, generators, inductors, loudspeakers, magnetic recording heads, and magnetic assemblies.

4. Magnet - Wikipedia

   en.wikipedia.org/wiki/Magnet

   Alnico magnets are made by casting or sintering a combination of aluminium, nickel and cobalt with iron and small amounts of other elements added to enhance the properties of the magnet. Sintering offers superior mechanical characteristics, whereas casting delivers higher magnetic fields and allows for the design of intricate shapes.

5. Neodymium magnet - Wikipedia

   en.wikipedia.org/wiki/Neodymium_magnet

   A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd 2 Fe 14 B tetragonal crystalline structure. [1] They are the most widely used type of rare-earth magnet .

6. Magnetism - Wikipedia

   en.wikipedia.org/wiki/Magnetism

   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 ...

7. Nanomagnet - Wikipedia

   en.wikipedia.org/wiki/Nanomagnet

   Canonical single-molecule magnets are the so-called Mn 12 and Fe 8 systems, with 12 and 8 transition metal atoms each and both with spin 10 (S = 10) ground states. The phenomenon of zero field magnetization requires three conditions: A ground state with finite spin; A magnetic anisotropy energy barrier; Long spin relaxation time.