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 HC. 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.

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Death to Death

by: Crucified

there is blood on the street
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though you mock death with words
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Latest News for: coercivity

Tennis' civil war takes another twist as Novak Djokovic-led union accuses ATP of 'coercive and ...

The Daily Mail 22 Mar 2025
The war in tennis became even more uncivil on Saturday, as Novak Djokovic's PTPA filed a court order accusing the ATP of 'coercive and threatened behaviour' towards players.

Unilateral Coercive Measures and the War on Women

Scheerpost 22 Mar 2025
The last point is pertinent because the United States currently imposes sanctions (a form of Unilateral Coercive Measures) against about forty countries without a UNSC mandate.

Australia's 'Coercive' News Media Rules Are The Latest Targets Of US Trade Ire

MENA FN 21 Mar 2025
(MENAFN - The Conversation) As the United States recalibrates its trade policies to combat what the Trump administration sees as–unfair– treatment by other countries, two significant industries have ... .

Osaka court rejects damages suit over coercive interrogations

Japan Times 21 Mar 2025
Shinobu Yamagishi, 62, the former president of Osaka-based real estate company Pressance, was seeking about �700 million in damages ... .

Disturbing portrait of coercive control and violent masculinity revealed at Lilie James inquest

The Observer 21 Mar 2025
What emerged at the inquest was a disturbing portrait of contemporary coercive control, of fragile masculinity turned violent, and of the ways abusive relationships can remain hidden.An unravelling relationship.

Trump urged to target ‘coercive and discriminatory’ Australian media laws by Musk’s X, Apple, Google ...

AOL 20 Mar 2025
Big tech giants Apple, Meta, Google, Amazon and Elon Musk’s X have lodged a formal complaint urging the Trump administration to target “coercive and discriminatory” Australian media laws.

Man, 23, to be charged with murder, rape and controlling or coercive behaviour over the ...

The Daily Mail 19 Mar 2025
A man has been charged with the murder, rape and controlling or coercive behaviour over the death of Harshita Bella ... A man has been charged with the murder, rape and controlling or coercive behaviour over the death of Harshita Bella (pictured).

China Fires Back After G7 Condemns "Coercive, Dangerous" Expansionism

The Maritime Executive 18 Mar 2025
The G7 release condemned "China’s illicit, provocative, coercive and dangerous actions that seek unilaterally to alter the status quo . . including through land reclamations, and building of outposts, as well as their use for military purpose.".

Beyond bruises: Coercive control in intimate partner violence

Korea Times 17 Mar 2025
Last month, I penned an article about intimate partner violence (IPV), in which I briefly introduced coercive control as one of the most devastating forms of abuse ... Coercive control occurs in various ...

Narendra Modi Govt Has Become An Apologist For U.S. On Trump’s Coercive Tariff Hikes

The Arabian Post 14 Mar 2025
Arabian Post -. By P. Sudhir ... He even called India a ‘tariff king’ ... In what is becoming a recurring pattern, the Indian government is increasingly becoming an apologist for the US and its coercive tactics ... On Trump’s Coercive Tariff Hikes ....

Kerry man jailed for coercive control ‘has sympathy for himself not the victim’

Irish Independent 13 Mar 2025
A Kerry man who subjected his girlfriend to a ‘prolonged’ ...

Trump’s coercive approach risks driving Latin America into China’s arms

Defense One 13 Mar 2025
policy. Back in the 1800s, the target was meddling European powers prone to interfering in what Washington considered its backyard ... Yet the coercive approach that Trump and his advisors have adopted risks undermining, not strengthening, the U.S ... On Feb.

SC Stays Coercive Action Against Lotus Greens Over Noida Sports City Project

News18 11 Mar 2025
Last month, the Allahabad High Court ordered a CBI investigation into alleged irregularities in the Sports City project, citing violations in its execution ... .
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