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  2. Ferrite (magnet) - Wikipedia

    en.wikipedia.org/wiki/Ferrite_(magnet)

    A ferrite is one of a family of iron oxide-containing magnetic ceramic materials. They are ferrimagnetic, ... Unlike many ferromagnetic materials, ...

  3. Ferromagnetism - Wikipedia

    en.wikipedia.org/wiki/Ferromagnetism

    Ferromagnetism is a property of certain materials (such as iron) that results in a significant, observable magnetic permeability, and in many cases, a significant magnetic coercivity, allowing the material to form a permanent magnet. Ferromagnetic materials are noticeably attracted to a magnet, which is a consequence of their substantial ...

  4. Ferrimagnetism - Wikipedia

    en.wikipedia.org/wiki/Ferrimagnetism

    Like ferromagnetic substances, ferrimagnetic substances are attracted by magnets and can be magnetized to make permanent magnets. The oldest known magnetic substance, magnetite (Fe 3 O 4 ), is ferrimagnetic, but was classified as a ferromagnet before Louis Néel discovered ferrimagnetism in 1948. [ 2 ]

  5. Curie temperature - Wikipedia

    en.wikipedia.org/wiki/Curie_temperature

    Ferromagnetic materials are magnetic in the absence of an applied magnetic field. When a magnetic field is absent the material has spontaneous magnetization which is a result of the ordered magnetic moments; that is, for ferromagnetism, the atoms are symmetrical and aligned in the same direction creating a permanent magnetic field.

  6. Saturation (magnetic) - Wikipedia

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

    Saturation puts a practical limit on the maximum magnetic fields achievable in ferromagnetic-core electromagnets and transformers of around 2 T, which puts a limit on the minimum size of their cores. This is one reason why high power motors, generators, and utility transformers are physically large; to conduct the large amounts of magnetic flux ...

  7. 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.

  8. Ferrite core - Wikipedia

    en.wikipedia.org/wiki/Ferrite_core

    In electronics, a ferrite core is a type of magnetic core made of ferrite on which the windings of electric transformers and other wound components such as inductors are formed. It is used for its properties of high magnetic permeability coupled with low electrical conductivity (which helps prevent eddy currents ).

  9. Ferrite - Wikipedia

    en.wikipedia.org/wiki/Ferrite

    Ferrite may refer to: Ferrite (iron) , one of the allotropes of iron that is stable at room temperature and pressure, α-Fe Ferrite (magnet) , a ferromagnetic ceramic material