Samarium oxide is an inorganic metal compound with the molecular formula Sm2O3, which can be used to prepare other organic materials and catalysts. It is a white slightly yellowish powder that is insoluble in water and soluble in acids.

Materials used for making metal samarium, magnetic materials, and memory components;

Can be used as a glass additive for infrared absorption, as a coating in photosensitive materials. Production of samarium cobalt permanent magnet materials and raw materials for producing metallic samarium;

Used for manufacturing metal samarium, samarium cobalt permanent magnet materials, electronic devices and ceramic capacitors, high coercivity and high magnetic energy product samarium cobalt alloys;