Peculiarities of Magnetoresistive Properties of (Fe80Co20)xCu1-x Film Alloy Prepared by Layer-by-Layer Condensation with Post-Annealing

I.M. Pazukhaa, D.I. Saltykovb, Y.O. Shkurdodaa aSumy State University, Rymsky-Korsakov St. 2, 40007 Sumy, Ukraine bSumy State Pedagogical University named after A.S. Makarenko, Romens'ka St. 87, 40002 Sumy, Ukraine

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The work is devoted to the results of investigations of magnetoresistive properties of (Fe80Co20)xCu1-x film alloy prepared by layer-by-layer condensation with post-annealing at the temperature of 550 K. The total thickness of the samples ranged from 20 to 50 nm. It has been demonstrated that the samples are homogeneous in thickness. At the concentration of Cu atoms of 50 at.%, as a result of spin-dependent electron scattering, the isotropic nature of magnetoresistance with the value of 0.5-1% is observed. It confirms the efficiency of the proposed method for the preparation of granular film with giant magnetoresistance. The annealing of film alloys at the temperature of 700 K does not change the nature of magnetoresistance. At the concentration of Cu atoms of less than 50 at.%, the anisotropic magnetoresistance is fixed only.

DOI:10.12693/APhysPolA.141.608 topics: film alloy, crystal structure, annealing, magnetoresistance