Terbium(III,IV) oxide is used in the preparation of other terbium compounds. Activating agents for fluorescent powders, composites for catalytic automobile exhaust converters, Glass materials with a Faraday Rotation effect for optical and laser-based devices, Magneto-optical glasses, Magneto-optical recording materials.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.