La17Co17Ni66

La₁₇Co₁₇Ni₆₆ is a rare-earth transition metal alloy combining lanthanum, cobalt, and nickel in a roughly equiatomic composition. This material belongs to the family of high-entropy or multi-principal-element alloys, which are of significant research interest for their potential to achieve unusual combinations of strength, ductility, and thermal stability through compositional complexity. Industrial applications are primarily in advanced research environments rather than high-volume production, though the cobalt-nickel base and lanthanum addition suggest potential for high-temperature structural applications, magnetic devices, or catalytic systems where rare-earth modification of transition metal properties is beneficial.