Influence of Magnetic Prehistory on the Exchange Bias in Fe20Ni80/FeMn/Fe20Ni80 Films

In this work peculiarities of the hysteresis properties formation in permalloy layers included in Fe20Ni80/FeMn/Fe20Ni80 films were investigated. Temperature dependencies of magnetization reversal parameters were analyzed in the temperature range 5-300 K for samples with various FeMn thickness (2÷4 nm). Conditions of the exchange bias emergence were determined. Magnetic history was shown to have a significant effect on the magnitude and the character of the exchange bias

Elastomagnetoresistive Properties of Films of 3d-Metalls Alloys

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

Exchange Bias in FeMn/M (M = FeNi, Gd, Tb) Films

AbstractMicrostructure and hysteretic properties of magnetic multilayers were studied for Fe50Mn50/M structures, where M = Fe19Ni81, Gd or Tb. Comparative analysis of the hysteresis loops measured for the temperature range 5÷350K showed that Gd is not involved in the interlayer exchange coupling with antiferromagnetic Fe50Mn50 layer, while in the case of Tb definite indications of such interaction were observed. It is assumed that a qualitative difference in the magnetic behavior of these rare earth layers can be caused by differences in their structural features