Assertion: Ferromagnetic substances become pa | vedclass

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(A) The magnetic susceptibility of ferromagnetic materials decreases as temperature increases.At a specific transition temperature known as the Curie

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The magnetic susceptibility of ferromagnetic materials decreases as temperature increases.At a specific transition temperature known as the Curie temperature $(T_C)$,ferromagnetic materials transition into paramagnetic materials.This happens because,at high temperatures,the thermal agitation (kinetic energy) of the atoms becomes strong enough to overcome the exchange coupling forces that align the magnetic moments within the domains.As a result,the ordered structure of the magnetic domains is destroyed,leading to the loss of ferromagnetism.Therefore,both the Assertion and the Reason are correct,and the Reason provides a valid explanation for the Assertion.

Assertion: Ferromagnetic substances become paramagnetic above the Curie temperature.
Reason: Domains are destroyed at high temperature.

Similar Questions

Consider the following two statements $A$ and $B$ and identify the correct choice in the given answers.
$A$. Paramagnetism is explained by domain theory.
$B$. Susceptibility of a diamagnetic substance is independent of temperature.

Assertion: Electromagnets are made of soft iron.
Reason: Coercivity of soft iron is small.

The Curie temperature $T_{C}$ represents:

An example of a perfect diamagnet is a superconductor. This implies that when a superconductor is placed in an external magnetic field of intensity $B$,the magnetic field $B_s$ inside the superconductor will be such that

Magnetic susceptibility for a paramagnetic and diamagnetic material is respectively

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Assertion: Ferromagnetic substances become paramagnetic above the Curie temperature.Reason: Domains are destroyed at high temperature.