Magneto-Optical And Magnetic Properties Of Three-Layer Films Based On Permalloy And Copper
MICROSTRUCTURE AND PROPERTIES OF MICRO- AND NANOSCALE MATERIALS, FILMS, AND COATINGS (NAP 2019)(2020)
摘要
Three layer nanostructured films FexNi100-x/Cu/FexNi100-x (x congruent to 50, d(FeNi) = 40 (HM); d(Cu)= 5 (HM)) consisting of Fe0,5Ni0,5 alloy layers separated by Cu layer were obtained by layers-by-layers vacuum condensation at the pressure of 10(-4) Pa. Magnetic hysteresis loops of three-layer films were obtained using a vibration magnetometer. Magnetic hysteresis loops obtained in transverse geometry have an almost rectangular shape with sharp magnetization reversal. The magnetization reversal of the films completely changes in the magnetic field range with induction of -25 to 25 mT for freshly condensed films and -30 to 30 mT for thermostabilized films. The rectangular hysteresis contour is typical for single-layer films of ferromagnetic metals and alloys based on them and indicates the presence of an axis of easy magnetization in the sample plane. Magnetization in the direction perpendicular to the film plane shows the effect of a strong demagnetizing field. After thermal stabilization of the films, the dependence does not change significantly, except for an increase in the residual magnetization and coercive force (more pronounced hysteresis).
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关键词
magnetic properties,magneto-optical,three-layer
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