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  • According to Curie-Weiss law, what happens to the susceptibility of ferromagnetic materials if we start increasing its the temperature above its Curie Point temperature?<div class='qn

According to Curie-Weiss law, what happens to the susceptibility of ferromagnetic materials if we start increasing its the temperature above its Curie Point temperature?

Option: 1

Remains constant 


Option: 2

Decreases


Option: 3

Increases


Option: 4

First increases and then decreases


Answers (1)

best_answer

 

 

 

Curie-Weiss curve-

From the above curve, we can say that   (For  T>Tc)    \mathrm {\chi _{m}\propto \frac{1}{T-T_{c}}}  or  \mathrm {\chi _{m}= \frac{C}{T-T_{c}}}  where C is some constant.

As we increases the temperature (T) then the value of susceptiblity decreases. As we can see from the above equation

 

 

 

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Posted by

Ritika Kankaria

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