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

Options

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

Explanation

To solve the question, we need to understand the behavior of nickel as a ferromagnetic material and how its properties change with temperature.

### Step-by-Step Solution:

1. **Understanding Ferromagnetism**:
- Nickel is known to exhibit ferromagnetic properties at room temperature. This means that it has a strong magnetic moment and can retain magnetization even after the external magnetic field is removed.

**Hint**: Recall the characteristics of ferromagnetic materials, such as their ability to be magnetized and retain that magnetization.

2. **Curie Temperature Concept**:
- Each ferromagnetic material has a specific temperature known as the Curie temperature (T_C). Above this temperature, the thermal energy overcomes the magnetic ordering of the material.

**Hint**: Remember that the Curie temperature is the point at which ferromagnetic materials lose their ordered magnetic alignment.

3. **Effect of Temperature Increase**:
- When the temperature of nickel is increased beyond its Curie temperature, the material transitions from a ferromagnetic state to a paramagnetic state. In the paramagnetic state, the material can still respond to an external magnetic field, but it does not retain any magnetization once the external field is removed.

**Hint**: Think about how thermal agitation affects the alignment of magnetic moments in materials.

4. **Identifying the Correct Option**:
- Given the options provided:
- A) Paramagnetic
- B) Antiferromagnetic
- C) Diamagnetic
- D) Non-magnetic
- Since we established that nickel becomes paramagnetic when heated beyond its Curie temperature, the correct answer is option A.

**Hint**: Compare the definitions of the different types of magnetic properties to confirm your answer.

### Final Answer:
When the temperature of nickel is increased beyond its Curie temperature, it will show **paramagnetic** properties.