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प्रश्न
Compare dia, para and ferromagnetism.
How is ferromagnetism different from paramagnetism?
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उत्तर
| Diamagnetism | Paramagnetism | Ferromagnetism | |
| 1. | 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. |
| 2. | Each electron has finite orbital magnetic dipole moments. | Each atom has a net magnetic dipole moment. | Have a net dipole moment as in a paramagnetic material. |
| 3. | Since the orbital planes are orientated 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. |
| 4. | 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. |
| 5. | E.g.: Bismuth, copper, water, etc. | E.g.: Aluminium, platinum, oxygen, etc. | E.g.: Iron, cobalt, nickel, etc. |
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
What is ferromagnetism?
What type of magnetism is shown in the following alignment of magnetic moments?
What type of magnetism is shown by a substance if magnetic moments of domains are arranged in same direction?
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.
Explain the following with suitable examples:
Paramagnetism
Explain the following with suitable examples:
Ferrimagnetism
Explain why:
(i) Transition elements form coloured compounds.
(ii) Interhalogen compounds are more reactive than their constituent elements.
(iii) Cu+ is diamagnetic but Cu2+ is paramagnetic. (Z = 29)
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
The BH curve for a ferromagnetic material is shown in the figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenonid to demagnetize the ferromagnet completely is
Example of ferromagnetic substance is ____________.
All those atoms or molecules which have an odd number of electrons are
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.
The heat of combustion of a substance is:
Which of the following is not a ferroelectric compound?
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 ______.
Among the following ions, which one has the highest paramagnetism?
Which of the following is not paramagnetic?
Give a reason for the following:
Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
The metal complex ion that is paramagnetic is ______.
(Atomic number of Fe = 26, Cu = 29, Co = 27 and Ni = 28)
The calculated spin only magnetic moment of Cr2+ ion is ______.
