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  2. Ferrite (magnet) - Wikipedia

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

    Most common audio magnets, including those used in loudspeakers and electromagnetic instrument pickups, are ferrite magnets. Except for certain "vintage" products, ferrite magnets have largely displaced the more expensive Alnico magnets in these applications. In particular, for hard hexaferrites today the most common uses are still as permanent ...

  3. 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.

  4. Ferrimagnetism - Wikipedia

    en.wikipedia.org/wiki/Ferrimagnetism

    Ferrimagnetic ordering Magnetic orders: comparison between ferro, antiferro and ferrimagnetism Ferrite magnets. Ferrite, a ceramic compound, is one of the most common examples of a ferrimagnetic material. A ferrimagnetic material is a material that has populations of atoms with opposing magnetic moments, as in antiferromagnetism, but these ...

  5. Barium ferrite - Wikipedia

    en.wikipedia.org/wiki/Barium_ferrite

    Barium ferrite, abbreviated BaFe, BaM, is a chemical compound with the formula BaFe 12 O 19 (BaO : 6 Fe 2 O 3). [1] This and related ferrite materials are components in magnetic stripe cards and loudspeaker magnets.

  6. Ferromagnetism - Wikipedia

    en.wikipedia.org/wiki/Ferromagnetism

    Permanent magnets are made from hard ferromagnetic materials (such as alnico) and ferrimagnetic materials (such as ferrite) that are subjected to special processing in a strong magnetic field during manufacturing to align their internal microcrystalline structure, making them difficult to demagnetize. To demagnetize a saturated magnet, a ...

  7. 8 Everyday Items the Middle Class Won’t Be Able To ... - AOL

    www.aol.com/8-everyday-items-middle-class...

    Groceries that are imported from other countries, such as a variety of fruits, coffee, wine and specialty items, could very well become too expensive for the average middle-class household to ...

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