Samarium monosulfide is a binary inorganic chemical compound of samarium metal and sulfur with the chemical formula .
Fusion of stoichiometric amounts of pure substances:
Samarium monosulfide forms crystals of cubic system, spatial group Fm3m, cell parameters a = 0.5970âÂÂ0.5863 nm, Z = 4, structurally isomorphic with NaCl.
The compound melts congruently at a temperature of 1500 ðC, 1940 ðC, or 2080 ðC.
SmS is a chalcogenide material that exists in two possible states: as a metal (also called "golden") and as a semiconductor ("blue" or "black"). As a result, SmS has gained considerable interest as a switchable material.
Samarium monosulfide has a high sensitivity to deformation. Therefore, SmS is a promising material for creating pressure sensors of force, torque, accelerations, etc.