  A quinary (La0.5Ce0.5)65Al10(Co0.6Cu0.4)25 alloy with superior glass-forming
ability (GFA), identified by the formation of fully glassy rod of 32 mm in
diameter by tilt-pour casting, was reported. By comparing with the GFA of
quarternary (La0.5Ce0.5)65Al10TM25 and ternary Ln65Al10TM25 alloys (Ln = La or
Ce; TM = Co or Cu), we suggest that the strong frustration of crystallization
by utilizing the coexistence of La-Ce and Co-Cu to complicate competing
crystalline phases is helpful to construct BMG component with superior GFA.
