On heating, ferrimagnetic substances become paramagnetic. WHY? GIVE REASON

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Solution

The unequal parallel and anti parallel alignment of magnetic dipoles in ferrimagnetic substance are randomized upon heating leading to paramagnetic characteristics.

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Similar questions

Q. Why does a ferrimagnetic substance converts to paramagnetic substance on heating?

Q. Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: Both ferromagnetic and ferromagnetic are strongly attracted by the magnetic field.

Q. Assertion :Substances like

F e_{3} O_{4}

and

M g F e_{2} O_{4}

lose ferrimagnetism on heating and become paramagnetic. Reason: Magnetic moments of the domains in these substances are aligned in parallel and antiparallel directions in unequal numbers.

Which of the following statements are correct ?

(a) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic

(b) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic

(c) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other

(d) In ferromagnetic substances, all the domains get oriented in the direction of magnetic filed and remain as such even after removing magnetic field

Q. Which of the following becomes paramagnetic on heating?

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