Magnetization, Residual

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Magnetization, Residual

 

also remanent magnetization or remanence), the magnetization Jr that a ferromagnetic material has when the intensity of the external field is zero. Residual magnetization depends both on the magnetic properties of the material and on the previous magnetic history of the material—the nature of previous effects of a magnetic field on the material. The value of the residual magnetization of specific ferromagnetic specimens depends considerably on the shape of the specimens (this dependence is expressed by the action of the demagnetization factor). High-coercivity ferromagnets have the most stable residual magnetization. When ferromagnets are heated to a temperature above the Curie point, they lose their ferromagnetic properties and, at the same time, their residual magnetization. Mechanical vibrations also reduce the residual magnetization. Residual magnetization has extensive practical applications.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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