<p>In this study, using a mechanical alloying process, various amounts of carbon nanotubes were distributed in the alloy using Cu₃₀Ni₇₀ particles as its novelty. The effects of the presence of carbon nanotubes in nanocomposites were investigated using energy analysis, four-point probe surface magnetometry (PSM), vibrating sample magnetometry (VSM), scanning electron microscopy (SEM), and x-ray diffraction (XRD) techniques to confirm the production of Cu–Ni/carbon nanotube (CNT) nanocomposites. Microstructural examination of the nanocomposites using 5 h XRD images showed that the Cu–Ni–Ni alloy was homogeneous. The results of strength testing (5&#xa0;wt.%) confirmed the effective role of nanotubes in the fineness of the structure. The finest structure was obtained at the highest percentage of reinforcement, confirming the uniform distribution of carbon nanotubes in the alloy matrix. The electrical CNTs showed that the increased electrical conductivity of the nanocomposites in the presence of additional carbon nanotubes in the substrate led to a decrease in the saturation magnetization and an increase in the repulsive force of the nanocomposites.</p>