Does Hall magnet refer to ferrite magnet?

When sourcing magnets and developing products, we often hear customers refer to ‘Hall magnets’. So, do ‘Hall magnets’ simply refer to ferrite magnets?

Actually, it's not. Hall magnets are not a specific type of magnetic material, but rather refer to magnets used in conjunction with Hall sensors and Hall components. Ferrite magnets can be used as Hall magnets, and neodymium iron boron magnets can also be used, depending on the product's structure, detection distance, and magnetic field requirements.

The accompanying image shows are ferrite block magnet magnetised along its width.

The reason why many Hall effect sensors use ferrite magnets is that ferrite is relatively inexpensive and offers good corrosion resistance.

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Furthermore, there is no fixed direction for magnetising Hall effect magnets; they can be magnetised in the normal direction, radially, or even in a multi-pole configuration.

The above explains whether ‘Hall magnets’ refer to ferrite magnets. When selecting Hall magnets, the key consideration is not the name, but whether the magnetic field strength, pole distribution, dimensions, temperature and cost meet the requirements of the specific application.

Introduction to Hall magnets;

Is there specific orientation for the magnet in a Hall sensor?

Which side of the Hall sensor sensing magnets?