What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic? Justify your answer.

Explanation

To determine which type of substances, ferromagnetic or ferrimagnetic, would make better permanent magnets, we need to analyze the properties of both types of materials.

### Step-by-Step Solution:

1. **Define Ferromagnetic and Ferrimagnetic Substances**:
- **Ferromagnetic substances** are materials that can be magnetized; they have a strong magnetic moment and can retain their magnetization after the external magnetic field is removed. Examples include iron, cobalt, and nickel.
- **Ferrimagnetic substances** are materials that also exhibit magnetic properties but have unequal opposing magnetic moments. They can also retain magnetization, but typically to a lesser extent than ferromagnetic materials. An example is magnetite (Fe3O4).

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