The magnetic Kerr effect and magnetoresistance in multilayer Nb|FeNi systems deposited in the geometry of the Stern-Gerlach effect
Masrakova N. K.1,2, Pudonin F. A.1, Sherstnev I. A.1, Boltaev A. P.1, Kostzov D. S.1
1Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
2National University of Science and Technology MISiS, Moscow, Russia
Email: sherstnevia@lebedev.ru
The magnetic properties of multilayer Nb|FeNi structures were studied. Magnetic anisotropy was found in these systems, the orientation of which coincides with the orientation of unidirectional optical anisotropy. While studying the resistivity of structures ρ, we found that they have a negative value of the thermal resistance coefficient α, i. e. the structures belong to the class of metal structures with negative α (Mooij rule). A magnetoresistance of no more than 1 % was found in the percolation transition region for FeNi films. Magnetoresistance anisotropy was observed, which depended on both the orientation of the external magnetic field and the surface orientation of the current when measuring magnetoresistance. Keywords: thin film, island film, non-reciprocity, anisotropy, magnetism.
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