Antiferromagnetic property is given as

Options

A. `uarr uarr uarr uarr`
B. `uarr uarr darr uarr`
C. `uarr darr uarr darr`
D. `darr darr darr darr`

Answer

**Step-by-Step Solution:**

1. **Understanding Antiferromagnetism:**
- Antiferromagnetism is a type of magnetic ordering in materials where adjacent magnetic moments (spins) align in opposite directions. This results in a cancellation of the overall magnetic moment of the material.

2. **Defining the Phenomenon:**
- In antiferromagnetic materials, the electron spins are arranged in such a way that they are opposite to each other. This arrangement leads to a net magnetic moment of zero, as the opposing moments cancel each other out.

3. **Analyzing the Options:**
- We need to evaluate the given options to determine which one exhibits antiferromagnetic properties.
- **Option 1:** If the spins are aligned in the same direction, they will not cancel out, indicating ferromagnetism, not antiferromagnetism.
- **Option 2:** If the spins are aligned opposite to each other, they will cancel out, indicating antiferromagnetism.
- **Option 3:** If there are multiple spins that are also aligned oppositely, they will still result in a cancellation of the overall magnetic moment, confirming antiferromagnetic behavior.
- **Option 4:** Similar to option 1, if the spins are not opposite, they will not exhibit antiferromagnetism.

4. **Conclusion:**
- Based on the analysis, the option that shows the antiferromagnetic property is the one where the spins are aligned oppositely, leading to a cancellation of the magnetic moments.

5. **Final Answer:**
- The correct option that shows the antiferromagnetic property is **Option 2** (or Option 3, depending on the specific arrangement described).

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