Ad
related to: soft magnetic materials examples
Search results
Results from the WOW.Com Content Network
Most non-magnetic materials have a relatively small χ (on the order of a millionth), but soft magnets can have χ on the order of hundreds or thousands. For materials satisfying M = χ H , we can also write B = μ 0 (1 + χ ) H = μ 0 μ r H = μ H , where μ r = 1 + χ is the (dimensionless) relative permeability and μ =μ 0 μ r is the ...
3, is in between soft and hard magnetic material and is usually classified as a semi-hard material. [23] It is mainly used for its magnetostrictive applications like sensors and actuators [24] thanks to its high saturation magnetostriction (~200 ppm). Co Fe 2 O 4 has also the benefits to be rare-earth free, which makes it a good substitute for ...
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 ...
"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 ...
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.
Mu-metal is a soft magnetic alloy with exceptionally high magnetic permeability. The high permeability of mu-metal provides a low reluctance path for magnetic flux , leading to its use in magnetic shields against static or slowly varying magnetic fields.
Without it, alnico's coercivity is about 10 Oe, comparable to technical iron, a soft magnetic material. After the heat treatment alnico becomes a composite material, named "precipitation material"—it consists of iron- and cobalt-rich [14] precipitates in a rich-NiAl matrix. Assortment of Alnico magnets in 1956.
Strip of permalloy. Permalloy is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content.Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories, [1] it is notable for its very high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, and also in magnetic shielding to block magnetic fields.
Ad
related to: soft magnetic materials examples