Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond curie temperature, then it will show

Options

A. paramagnetism
B. anti-ferromagnetism
C. no magnetic property
D. diamagnetism

Answer

To solve the question, we need to understand the behavior of nickel as a ferromagnetic material and what happens when it is heated beyond its Curie temperature.

### Step-by-Step Solution:

1. **Identify the Property of Nickel at Room Temperature**:
- Nickel is known to exhibit ferromagnetic properties at room temperature. This means that it has a strong magnetic moment and can be magnetized easily.

2. **Understand the Concept of Curie Temperature**:
- The Curie temperature (or Curie point) is the temperature above which a ferromagnetic material loses its ferromagnetic properties and becomes paramagnetic. For nickel, this temperature is around 358°C.

3. **Analyze the Effect of Increasing Temperature**:
- When the temperature of nickel is increased beyond its Curie temperature, the thermal energy becomes sufficient to disrupt the alignment of magnetic moments that is characteristic of ferromagnetism.

4. **Determine the New Magnetic Behavior**:
- As a result of the increased temperature beyond the Curie point, nickel will transition from a ferromagnetic state to a paramagnetic state. In the paramagnetic state, the material will still respond to an external magnetic field, but the alignment of its magnetic moments will be random and much weaker compared to the ferromagnetic state.

5. **Conclusion**:
- Therefore, if the temperature of nickel is increased beyond its Curie temperature, it will show paramagnetic behavior.

### Final Answer:
Nickel will show paramagnetic behavior when the temperature is increased beyond its Curie temperature.

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