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2. Ferrite (magnet) - Wikipedia

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

   Ferrites can be divided into two groups based on their magnetic coercivity, their resistance to being demagnetized: [2] "Hard" ferrites have high coercivity, so are difficult to demagnetize. They are used to make permanent magnets for applications such as refrigerator magnets, loudspeakers, and small electric motors.

3. Ferrite core - Wikipedia

   en.wikipedia.org/wiki/Ferrite_core

   The most common soft ferrites are: Manganese-zinc ferrite (MnZn, with the formula Mn a Zn (1−a) Fe 2 O 4). MnZn have higher permeability and saturation levels than NiZn. Nickel-zinc ferrite (NiZn, with the formula Ni a Zn (1−a) Fe 2 O 4). NiZn ferrites exhibit higher resistivity than MnZn, and are therefore more suitable for frequencies ...

4. Ferrite bead - Wikipedia

   en.wikipedia.org/wiki/Ferrite_bead

   In this use, the bead is a simple form of a balun. Ferrite beads are one of the simplest and least expensive interference filters to install on preexisting electronic cabling. For a simple ferrite ring, the wire is wrapped around the core through the center, typically five or seven times.

5. Barium ferrite - Wikipedia

   en.wikipedia.org/wiki/Barium_ferrite

   Barium ferrites are robust ceramics that are generally stable to moisture and corrosion-resistant. [9] Ba‑Fe ferrite is an oxide, so it does not break down due to oxidation as much as a metal alloy might; giving Ba‑Fe a much greater life expectancy.

6. Ferrimagnetism - Wikipedia

   en.wikipedia.org/wiki/Ferrimagnetism

   This directional property is used in the construction of microwave devices like isolators, circulators, and gyrators. Ferrimagnetic materials are also used to produce optical isolators and circulators. Ferrimagnetic minerals in various rock types are used to study ancient geomagnetic properties of Earth and other planets.

7. Magnetic-core memory - Wikipedia

   en.wikipedia.org/wiki/Magnetic-core_memory

   The properties of materials used for memory cores are dramatically different from those used in power transformers. The magnetic material for a core memory requires a high degree of magnetic remanence , the ability to stay highly magnetized, and a low coercivity so that less energy is required to change the magnetization direction.

8. Zinc ferrite - Wikipedia

   en.wikipedia.org/wiki/Zinc_ferrite

   Zinc ferrites are a series of synthetic inorganic compounds of zinc and iron with the general formula of Zn x Fe 3−x O 4. Zinc ferrite compounds can be prepared by aging solutions of Zn(NO 3 ) 2 , Fe(NO 3 ) 3 , and triethanolamine in the presence and in the absence of hydrazine , [ 1 ] or reacting iron oxides and zinc oxide at high temperature.

9. Ferrite - Wikipedia

   en.wikipedia.org/wiki/Ferrite

   All pages with titles containing Ferrite; Ferrite bead, a component placed on the end of a data cable to reduce interference; Ferrite core, a structure on which the windings of electric transformers and other wound components are formed