ErMgAu

ErMgAu is a ternary intermetallic compound combining erbium (rare earth), magnesium, and gold. This is a research-phase material rather than a commodity alloy; it belongs to the rare-earth intermetallic family and is primarily of interest for fundamental materials science investigations into crystal structure, magnetic properties, and phase behavior. Potential applications would target niche sectors such as magnetocalorics, cryogenic devices, or high-performance electronics where rare-earth intermetallics offer unique functional properties, though practical industrial adoption remains limited pending further development and cost justification.