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coercivity

n. 1 (context uncountable English) The quality of being coercive 2 (context physics materials science English) The intensity of the magnetic field which must be applied in order to reduce the magnetization of a ferromagnetism material to zero after the magnetization of the sample has been driven to saturation

Wikipedia
Coercivity

In electrical engineering and materials science, the coercivity, also called the magnetic coercivity, coercive field or coercive force, is a measure of the ability of a ferromagnetic material to withstand an external magnetic field without becoming demagnetized. An analogous property, electric coercivity, is the ability of a ferroelectric material to withstand an external electric field without becoming depolarized.

For ferromagnetic material the coercivity is the intensity of the applied magnetic field required to reduce the magnetization of that material to zero after the magnetization of the sample has been driven to saturation. Thus coercivity measures the resistance of a ferromagnetic material to becoming demagnetized. Coercivity is usually measured in oersted or ampere/meter units and is denoted H. It can be measured using a B-H analyzer or magnetometer.

Ferromagnetic materials with high coercivity are called magnetically hard materials, and are used to make permanent magnets. Materials with low coercivity are said to be magnetically soft. The latter are used in transformer and inductor cores, recording heads, microwave devices, and magnetic shielding.

Usage examples of "coercivity".

But if the unexpected premonition doesn't originate in the coercivity of the seer, we must ask just what the source of the coercive vector is.

Your own researches into coercivity are a foundation-stone upon which other researchers have erected many a scholarly edifice.

While it is true that Teresa's popularity owed something to her coercivity and charm (as is true even of nonoperant divas), the voice stood on its own merits, unique and phenomenal, as her record­ings prove.

The child's own grandmas­terly coercivity ensured that he was never harassed by the media or by other busybodies, and the rest of his childhood seemed to pass peacefully without attracting the attention of the world outside Hanover, New Hampshire.

I had gleaned from family scuttlebutt that the girl was a potential par­amount, if she could only manage to overcome some serious in­hibitions that still kept portions of her creativity, redactive power, and coercivity latent.