What is the difference between ferrimagnetic and paramagnetic substances?

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

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

Q. Write three difference between diamagnetic and paramagnetic substances.

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.

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