Abstract—Aluminum-based metallic ribbons with the compositions Al86Ni4Co4Nd(Sm)6 and Al86Ni6Co2Nd(Sm)6 were produced by melt spinning. X-ray diffraction characterization showed that the ribbons had an amorphous structure. Their crystallization kinetics were studied by differential scanning calorimetry and their resistivity was measured by a standard four probe method. The Al–Ni–Co–REM ribbons were shown to have a broader temperature range of an amorphous state than do Al–Ni(Co)–REM ternary alloys. We found compositions with an enhanced glass-forming ability.