Chalcogen, Non-disordered, Er-x polyhedra, Monoclinic

• Er-S
• Er-O-Si
• Er-H-O-S
• Er-O-Ta
• Er-O-Ru-Sr
• thermal and thermodynamic properties
• electronic and electrical properties
• structural properties
• phase transitions
• mechanical properties
• non-disordered
• rare earth
• lanthanoid
• chalcogen