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प्रश्न
Give reasons:Ferrimagnetic substances show better magnetism than antiferromagnetic substances.
Why do ferrimagnetic substances show better magnetism than antiferromagnetic substances?
उत्तर १
In the presence of magnetic field, the magnetic moments of domains of an antiferromagnetic substances are ordered in such a way half of the magnetic moments are aligned in one direction while the remaining half are in opposite direction. As a result of it net magnetic moment will be zero whereas in case of ferrimagnetic substances the magnetic moments of the domains of ferrimagnetic substances are aligned in parallel and anti-parallel directions in unequal numbers. As a result, there will be small value of magnetic moment for ferrimagnetic substances.
उत्तर २
Anti-ferromagnetism have domain structures that are oppositely oriented and cancel out each other's magnetic moment while in ferrimagnetism the magnetic moments of the domains in the substance are aligned in parallel and anti-parallel directions in unequal numbers resulting net dipole moment. Hence, ferrimagnetic substances show better magnetism than antiferromagnetic substances.
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संबंधित प्रश्न
Explain the following with suitable examples: Ferrimagnetism
Example of ferromagnetic substance is ____________.
Which type of substances would make better permanent magnets?
Which of the following arrangements shows schematic alignment of magnetic moments of antiferromagnetic substances?
Which of the following statements is not true?
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
Which of the following statements are correct?
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(ii) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic.
(iii) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other.
(iv) In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Which of the following is not a ferroelectric compound?
The susceptibility of a paramagnetic material is 99. The permeability of the material in Wb/A-m is ______.
[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
The value of aluminium susceptibility is 2.2 × 10-5. The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is `"x"/10^4`. Then the value of x is ______.
