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Above Curie temperature [2006]
- a)a paramagnetic substance becomesdiamagnetic
- b)a diamagnetic substance becomesparamagnetic
- c)a paramagnetic substance becomesferromagnetic
- d)a ferromagnetic substance becomesparamagnetic
Correct answer is option 'D'. Can you explain this answer?
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Above Curie temperature [2006]a)a paramagnetic substance becomesdiam...
Above Curie Temperature, a ferromagnetic substance becomes paramagnetic
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Above Curie temperature [2006]a)a paramagnetic substance becomesdiam...
Explanation:
Curie temperature is the temperature at which a ferromagnetic substance loses its ferromagnetic property and becomes paramagnetic. Above Curie temperature, the magnetic domains of the ferromagnetic substance loses its alignment and the substance loses its magnetic property. The temperature at which this transition occurs is called the Curie temperature.
Effect of Curie temperature on different substances:
1. Paramagnetic substance: A substance that is weakly magnetic in the presence of an external magnetic field becomes weaker as the temperature increases. Above the Curie temperature, the substance loses all its magnetic properties and becomes non-magnetic.
2. Diamagnetic substance: A substance that is weakly repelled by an external magnetic field becomes less repelled as the temperature increases. Above the Curie temperature, the substance becomes less diamagnetic and may even become paramagnetic.
3. Ferromagnetic substance: A substance that is strongly magnetic in the presence of an external magnetic field loses its magnetization as the temperature increases. Above the Curie temperature, the substance loses its ferromagnetic property and becomes paramagnetic.
Conclusion:
Thus, the correct answer is option D. A ferromagnetic substance becomes paramagnetic above Curie temperature.
Curie temperature is the temperature at which a ferromagnetic substance loses its ferromagnetic property and becomes paramagnetic. Above Curie temperature, the magnetic domains of the ferromagnetic substance loses its alignment and the substance loses its magnetic property. The temperature at which this transition occurs is called the Curie temperature.
Effect of Curie temperature on different substances:
1. Paramagnetic substance: A substance that is weakly magnetic in the presence of an external magnetic field becomes weaker as the temperature increases. Above the Curie temperature, the substance loses all its magnetic properties and becomes non-magnetic.
2. Diamagnetic substance: A substance that is weakly repelled by an external magnetic field becomes less repelled as the temperature increases. Above the Curie temperature, the substance becomes less diamagnetic and may even become paramagnetic.
3. Ferromagnetic substance: A substance that is strongly magnetic in the presence of an external magnetic field loses its magnetization as the temperature increases. Above the Curie temperature, the substance loses its ferromagnetic property and becomes paramagnetic.
Conclusion:
Thus, the correct answer is option D. A ferromagnetic substance becomes paramagnetic above Curie temperature.
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Above Curie temperature [2006]a)a paramagnetic substance becomesdiamagneticb)a diamagnetic substance becomesparamagneticc)a paramagnetic substance becomesferromagneticd)a ferromagnetic substance becomesparamagneticCorrect answer is option 'D'. Can you explain this answer?
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