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Abstract—The study is related to the investigation of hysteretic and magnetostrictive properties of single-layer Fe10Ni90 films and nano-structured [Fe10Ni90/Cu]p/Fe10Ni90 films, in which magnetostrictive layers are separated with a nonmagnetic interlayer. The magnetostriction effect is shown to depend on the total layer thickness; in this case, the magnetostriction of the [Fe10Ni90/Cu]p/Fe10Ni90 film structures was found to be higher than that of the single-layer Fe10Ni90 films. The observed peculiarity is associated with weakening the fixing effect of a substrate. [ABSTRACT FROM AUTHOR]

Systematic data on the structural state and magnetic properties of films belonging to the binary Dy100 –xCox system have been measured within broad ranges of compositions (0 ≤ x < 85), temperatures (5‒300 K), and magnetic fields (0–70 kOe). It was found that in the absence of magnetic moment on Co atoms (x ≤ 50), the films are in an asperomagnetic state, in which a considerable and nonmonotonical concentration change in the principal magnetic characteristics is observed. In the region of x > 50, the films have a sperimagnetic structure. It has been shown that the quantitative description of spontaneous magnetization in such a state can be obtained in the molecular field model. [ABSTRACT FROM AUTHOR]

Magnetoresistive properties of 3d-metals alloys magnetostrictive films under application of elastic deformations were investigated. Linear stress was shown to have a significant effect on magnetoresistive effect in the films through the rotation of the easy magnetization axis. Dependencies of the relative change of resistivity were obtained in a cyclic deformation regime for films of different compositions. [ABSTRACT FROM AUTHOR]

Influence of annealing on hysteresis properties of the soft magnetic layer in Fe20Ni80/Tb26Co74 and Fe20Ni80/Ti/Tb26Co74 films with unidirectional anisotropy was investigated. Modification of the interface by introduction of the ultrathin Ti spacer was demonstrated to improve stability of coercivity and exchange bias field. According to our assumption, the Ti spacer can act as a barrier preventing a thermally-induced diffusion between the magnetic layers. In order to verify this point grazing incidence X-ray fluorescent analysis was used. Comparison of two sets of data attributed to the samples with and without Ti spacer at different stages of annealing revealed decrease of the angular shift between Co and Ni dependences even after annealing at 70°C for Fe20Ni80/Tb26Co74 and absent of any changes up to 300°C for the Fe20Ni80/Ti/Tb26Co74 film. These results can be interpreted as an evidence of the low-temperature interface modification in form of diffusion-like process in the samples without Ti spacer. [ABSTRACT FROM AUTHOR]

Influence of temperature on magnetization process was investigated in exchange coupled Tb26Co74/Co/Fe20Ni80 films. Temperature dependences of exchange bias field and coercivity of the Fe20Ni80 layer were obtained for films with various thicknesses of the Co spacer. The results obtained were interpreted in terms of changes of magnetic interface localization. [ABSTRACT FROM AUTHOR]