单词	coercivity
释义	coercivity /ˌkəʊəˈsɪvɪti / noun [mass noun] Physics The resistance of a magnetic material to changes in magnetization, equivalent to the field intensity necessary to demagnetize the fully magnetized material.The straightforward remedy is to adopt magnetic materials of higher coercivity, meaning they are harder both to magnetize and to demagnetize.... Magnetic stripes are defined by coercivity, or how densely the magnetic particles are packed into the stripe. The coercivity of haematite exceeds that of magnetite, and hence this technique is of little use on haematite-dominated magnetizations.
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