What happens when ferrimagnetic `Fe_(3)O_(4)` is heated to `850 K`?

Explanation

To understand what happens when ferrimagnetic `Fe3O4` is heated to `850 K`, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Identify the Nature of `Fe3O4`:**
- `Fe3O4` is a ferrimagnetic material, which means it has magnetic properties due to the alignment of magnetic moments of its ions.

2. **Understand the Effect of Temperature on Magnetic Materials:**
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