Remanence
MAGNETIZATION THAT REMAINS IN MATERIAL AFTER AN EXTERNAL MAGNETIC FORCE HAS BEEN REMOVED
Remanent Magnetism; Retentivity; Residual flux density; Remanent; Remanent magnetization; Remanent magnetism; Saturation isothermal remanence; Permanent magnetization; Magnetic remanence; Residual magnetization
Remanence or remanent magnetization or residual magnetism is the magnetization left behind in a ferromagnetic material (such as iron) after an external magnetic field is removed. Colloquially, when a magnet is "magnetized", it has remanence.