Erbium disilicideErbium disilicide is a binary inorganic compound of erbium and silicon with the chemical formula. Other erbium silicides are known.Physical propertiesforms dark grey crystals of orthorhombic system. Space group P6/mmm.UsesThe compound has been investigated as for semiconductor use, optoelectronics, high-temperature electronics, alloy additives and protective coatings.