Which type of magnetic behaviour is shown by ‘magnetite’ $(F e_{3} O_{4})$ ?

Ferromagnetism

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Ferrimagnetism

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Antiferromagnetism

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Diamagnetism

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Solution

The correct option is B Ferrimagnetism
Ferrimagnetism arises due to the unequal magnetic moments in opposite direction, resulting net magnetic moment in one direction.
Magnetic moments of the domains are aligned in parallel and anti-parallel directions in unequal numbers
These materials are weakly attracted by magnetic fields as compared to ferromagnetic substances.

On heating, substance loses its ferrimagnetism property and becomes paramagnetic.

$F e_{3} O_{4}, ferrites like M g F e_{2} O_{4} and Z n F e_{2} O_{4}$ are examples of ferrimagnetism.

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({F e}_{3} O_{4})

Magnetite is a/an___magnet

F e C_{2} O_{4}

F e C_{2} O_{4} ⟶ {F e}^{3 +} + C O_{2}

{F e}_{3} O_{4}

{F e}_{3} O_{4} + {K M n O}_{4} \to {F e}_{2} O_{3} + {M n O}_{2}

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