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Definition of "remanence" |
The residual magnetisation of a ferromagnetic substance subjected to a hysteresis cycle when the magnetising field is reduced to zero. / Remanence or remanent magnetization is the magnetization left behind in a ferromagnetic material (such as iron) after an external magnetic field is removed. It is also the measure of that magnetization. Colloquially, when a magnet is "magnetized" it has remanence. The remanence of magnetic materials provides the magnetic memory in magnetic storage devices, and is used as a source of information on the past Earth's magnetic field in paleomagnetism. / (1) in a ferromagnetic material, the value of the magnetic flux density when the magnetic field intensity is zero. |
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