Abstract
The present work shows the comprehensive investigations of phase state, magnetic properties, magnetoresistive, and magnetocaloric effects of AlCrFeCoNiCu thin-film high-entropy alloy (HEA). Mosaic target with six segments has been used for tailoring the film composition. The results show that the magnetic and magnetoresistive properties of HEA thin films are significantly affected by the presence of the face-centered-cubic (FCC) phase, which is formed during the annealing process. High-defective structure of thin films in as-deposited state results in the presence of the paramagnetic phase causing the absence of spontaneous magnetization and magnetoresistance. The formation of the FCC phase during heat treatment leads to the anisotropic magnetoresistance appearance. Besides, the low values of coercivity and magnetization at 300 K of annealed thin films point out that these samples could be potentially useful for the magnetocaloric application due to the compositional tunability.
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