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2. Ferrite (magnet) - Wikipedia

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

   The maximum magnetic field B is about 0.35 tesla and the magnetic field strength H is about 30–160 kiloampere turns per meter (400–2000 oersteds). [33] The density of ferrite magnets is about 5 g/cm 3. The most common hard ferrites are: Strontium ferrite Sr Fe 12 O 19 (Sr O · 6 Fe 2 O

3. 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 ...

4. Magnetic core - Wikipedia

   en.wikipedia.org/wiki/Magnetic_core

   "Soft" magnetic materials with low coercivity and hysteresis, such as silicon steel, or ferrite, are usually used in cores. Magnetic field (green) created by a current-carrying winding (red) in a typical magnetic core transformer or inductor, with the iron core C forming a closed loop, possibly with air gaps G in it. The drawing shows a section ...

5. Coercivity - Wikipedia

   en.wikipedia.org/wiki/Coercivity

   The coercivity is a measure of the degree of magnetic hysteresis and therefore characterizes the lossiness of soft magnetic materials for their common applications. The saturation remanence and coercivity are figures of merit for hard magnets, although maximum energy product is also commonly quoted.

6. 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.

7. Saturation (magnetic) - Wikipedia

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

   The stronger the external magnetic field H, the more the domains align, yielding a higher magnetic flux density B. Eventually, at a certain external magnetic field, the domain walls have moved as far as they can, and the domains are as aligned as the crystal structure allows them to be, so there is negligible change in the domain structure on ...

8. Recording head - Wikipedia

   en.wikipedia.org/wiki/Recording_head

   Magnetic - Magnetic recording heads use the principles of electromagnetism to coerce a paramagnetic recording medium, such as iron oxides, to orient in a magnetic storage medium such as magnetic tape, floppy disk or hard disk. Record heads are constructed of laminated permalloy, ferrite, sendust or magnetoresistive materials.

9. 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 ...