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Identifiers | |
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3D model (JSmol) | |
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Properties | |
SSm | |
Molar mass | 182.42 g·mol−1 |
Appearance | dark brown crystals |
Melting point | 1,940 °C (3,520 °F; 2,210 K) |
Structure | |
cubic | |
Related compounds | |
Other cations | Neodymium sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Samarium monosulfide is a binary inorganic chemical compound of samarium metal and sulfur with the chemical formula SmS. [1]
Fusion of stoichiometric amounts of pure substances:
Samarium monosulfide forms crystals of cubic system, spatial group Fm3m, cell parameters a = 0.5970–0.5863 nm, Z = 4, structurally isomorphic with NaCl. [2]
The compound melts congruently at a temperature of 1500 °C, 1940 °C, or 2080 °C. [3]
SmS is a chalcogenide material that exists in two possible states: as a metal (also called "golden") and as a semiconductor ("blue" or "black"). [4] As a result, SmS has gained considerable interest as a switchable material. [5]
Samarium monosulfide has a high sensitivity to deformation. Therefore, SmS is a promising material for creating pressure sensors of force, torque, accelerations, etc. [6]