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प्रश्न
Compare dia, para and ferromagnetism.
उत्तर
| Diamagnetism | Paramagnetism | Ferro magnetism |
| A force tends to move the material from the stronger part to the weaker part of the external field. | Weak magnetism in the direction of the applied field. | Strong magnetism in the direction of the applied field. |
| Each electron has finite orbital magnetic dipole moments. | Each atom has a net magnetic dipole moment. | Have net dipole moment as in a paramagnetic material. |
| Since the orbital planes are oriented in a random manner, the vector sum of magnetic moments is zero. | Due to the random orientation of the magnetic moments, the net magnetic moment of the material is zero. | Within each domain, the magnetic moments are spontaneously aligned in a direction. |
| The resultant magnetic moment for each atom is zero. | There is a net magnetic dipole moment induced in the direction of the applied field. | Since the direction of magnetisation varies from domain to domain, the net magnetisation of the specimen is zero. |
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संबंधित प्रश्न
Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.
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The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains:
(i) get oriented in the direction of the applied magnetic field.
(ii) get oriented opposite to the direction of the applied magnetic field.
(iii) are oppositely oriented with respect to each other without the application of magnetic field.
(iv) cancel out each other’s magnetic moment.
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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]
