Ferrimagnetic is observed when the magnetic moments of the domains in the substance are ?

oppositely oriented and cancel each other's magnetic moment.

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aligned in parallel and anti-parallel directions in unequal numbers.

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randomly oriented and their magnetic moments get cancelled.

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in same direction and get aligned in magnetic field.

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Solution

The correct option is B aligned in parallel and anti-parallel directions in unequal numbers.
A ferrimagnetic material is defined as one in which the magnetic dipole of the atoms on different sublattices are opposed as in antiferromagnetism but in ferrimagnetic materials, opposing moments are unequal and a spontaneous net magnetization remains.
So, option B is correct.

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Similar questions

The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains ...........

(a) get oriented in the direction of the applied magnetic fiels

(b) get oriented opposite to the direction of the applied magnetic fiels

(d) cancel out each other's magnetic moment

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 :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.

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ..........

(a) all the domains get oriented in the direction of a magnetic field

(b) all the domains get oriented in the direction opposite to the direction of a magnetic field

(d) domains are not affected by a magnetic field

Q. (i) Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.

(ii) Which stoichiometric defect decreases the density of the crystal ?

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