Er10 Co4 Te4

Er₁₀Co₄Te₄ is a ternary intermetallic semiconductor compound combining erbium, cobalt, and tellurium elements. This material belongs to the rare-earth transition-metal telluride family and appears to be a research-phase compound rather than an established industrial material; it is likely being investigated for thermoelectric, optoelectronic, or magnetic applications given the combination of rare-earth and chalcogenide character. The incorporation of erbium (a lanthanide) into a cobalt-tellurium matrix suggests potential utility in specialized electronic or photonic devices where rare-earth luminescence or strong spin-orbit coupling could be leveraged.