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In which of the following magnetic properties of elements does the magnetic susceptibility increase on increasing the temperature?
- a)Paramagnetism
- b)Anti-ferromagnetism
- c)Ferromagnetism
- d)Diamagnetism
Correct answer is option 'B'. Can you explain this answer?
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In which of the following magnetic properties of elements does the mag...
Understanding Magnetic Properties
Magnetic susceptibility is a measure of how much a material will become magnetized in an external magnetic field. The behavior of magnetic susceptibility varies among different types of magnetic materials, such as paramagnets, anti-ferromagnets, ferromagnets, and diamagnets.
Paramagnetism
- In paramagnetic materials, magnetic susceptibility increases with temperature. This is because thermal energy helps to align the magnetic moments of the atoms, making them more responsive to external magnetic fields.
Anti-ferromagnetism
- Anti-ferromagnetic materials exhibit a unique behavior where adjacent magnetic moments align in opposite directions, canceling each other out.
- As temperature increases, thermal agitation disrupts this ordered arrangement, reducing the cancellation effect.
- Consequently, the net magnetic moment increases, leading to an increase in magnetic susceptibility.
Ferromagnetism
- Ferromagnetic materials retain a permanent magnetic moment even in the absence of an external field due to alignment of spins.
- While susceptibility does change with temperature, it generally decreases as temperature approaches the Curie point, where ferromagnetism is lost.
Diamagnetism
- Diamagnetic materials exhibit a very weak and negative susceptibility that is largely unaffected by temperature changes.
- Their magnetic susceptibility remains constant, regardless of temperature variations.
Conclusion
The correct answer to the question is option 'B' because, in anti-ferromagnetic materials, the magnetic susceptibility increases with temperature due to the disruption of the anti-parallel alignment of magnetic moments, leading to a net increase in magnetization.
Magnetic susceptibility is a measure of how much a material will become magnetized in an external magnetic field. The behavior of magnetic susceptibility varies among different types of magnetic materials, such as paramagnets, anti-ferromagnets, ferromagnets, and diamagnets.
Paramagnetism
- In paramagnetic materials, magnetic susceptibility increases with temperature. This is because thermal energy helps to align the magnetic moments of the atoms, making them more responsive to external magnetic fields.
Anti-ferromagnetism
- Anti-ferromagnetic materials exhibit a unique behavior where adjacent magnetic moments align in opposite directions, canceling each other out.
- As temperature increases, thermal agitation disrupts this ordered arrangement, reducing the cancellation effect.
- Consequently, the net magnetic moment increases, leading to an increase in magnetic susceptibility.
Ferromagnetism
- Ferromagnetic materials retain a permanent magnetic moment even in the absence of an external field due to alignment of spins.
- While susceptibility does change with temperature, it generally decreases as temperature approaches the Curie point, where ferromagnetism is lost.
Diamagnetism
- Diamagnetic materials exhibit a very weak and negative susceptibility that is largely unaffected by temperature changes.
- Their magnetic susceptibility remains constant, regardless of temperature variations.
Conclusion
The correct answer to the question is option 'B' because, in anti-ferromagnetic materials, the magnetic susceptibility increases with temperature due to the disruption of the anti-parallel alignment of magnetic moments, leading to a net increase in magnetization.
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In which of the following magnetic properties of elements does the mag...
On increasing the temperature, the magnetic susceptibility of diamagnetic substances do not change, that of paramagnetic and ferromagnetic substances decrease and that of antiferromagnetic substances increase.
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