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Question

Which is NOT a property of ferrimagnetism?


A

These substances lose ferrimagnetism on heating.

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B

Magnetic moments of the domains in the substance are aligned in parallel and anti-parallel directions in unequal numbers.

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C

The domains are oppositely oriented and cancel out each other's magnetic moment.

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D

These substances are attracted very strongly by a magnetic field.

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Solution

The correct option is B

Magnetic moments of the domains in the substance are aligned in parallel and anti-parallel directions in unequal numbers.


Ferrimagnetism is observed when the magnetic moments of the domains in the substance are aligned in parallel and anti-parallel directions in unequal numbers. They are weakly attracted by magnetic field as compared to ferromagnetic substances. Fe3O4 (magnetite) and ferrites like MgFe2O4 and ZnFe2O4 are examples of such substances.


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