coercivity

American  

[koh-er-siv-i-tee] / ˌkoʊ ərˈsɪv ɪ ti /

noun

Electricity.

1. the magnetic intensity needed to reduce to zero the magnetic flux density of a fully magnetized magnetic specimen or to demagnetize a magnet.

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coercivity British  

/ ˌkəʊɜːˈsɪvɪtɪ /

noun

1. the magnetic-field strength necessary to demagnetize a ferromagnetic material that is magnetized to saturation. It is measured in amperes per metre Compare coercive force

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coercivity Scientific  

/ kō′ər-sĭv′ĭ-tē /

1. The magnetic flux density needed to reduce the magnetization of a material (especially a ferromagnetic material) from complete saturation to zero. Coercivity is measured in teslas.

2. Compare remanence

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Etymology

Origin of coercivity

First recorded in 1895–1900; coercive + -ity

Example Sentences

In response, Apple says: "Smartphones and other items contain magnets or components that may have a risk of demagnetizing low coercivity cards. To prevent this from happening, users should keep these cards stored separately."

From BBC • Aug. 15, 2024

The coercivity of industrial Nd-Fe-B magnets is far below its physical limit up to now.

From Science Daily • Apr. 26, 2024

Micromagnetic simulations on the tomography-based models reproduced the coercivity of ultrafine-grained Nd-Fe-B magnets and explained its mechanism.

From Science Daily • Apr. 26, 2024

Such simulations have shed light on microstructural features that hinder the coercivity, which quantifies a magnet's resistance to demagnetization in opposing magnetic fields.

From Science Daily • Apr. 26, 2024

If required for permanent magnet making, it should have the highest possible coercivity combined with a high retentivity.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various