Abstract
In the paper the results of experimental studies of film structures in the Fe-Bi system are presented. By the method of electron magnetic resonance, it is shown that for bilayer structures the magnetic state depends on the order of deposition of the magnetic and non-magnetic layers. In the three-layer structures, the effect of exchange bias was found, the magnitude of that depends on the thickness of the bismuth layer.
Highlights
Magnetic nanoscale layered structures with a semi-metallic interlayer are poorly studied objects, and are of considerable interest to the physics of the condensed state
In the film structures of the Fe – Bi system [3], it was found that if the thickness of the iron layer was less than 1.5 nm, the Fe/Bi films had perpendicular magnetic anisotropy, while at greater thicknesses of the iron layer the magnetization lay in the film plane
By study film structures in the Fe-Bi system, it was found that the magnetic behavior of bilayer films strongly depends on the order of deposition of the magnetic and non-magnetic layers [8]
Summary
Magnetic nanoscale layered structures with a semi-metallic interlayer are poorly studied objects, and are of considerable interest to the physics of the condensed state. In the three-layer structures, the effect of exchange bias was found, the magnitude of that depends on the thickness of the bismuth layer. In the FeNi/Bi/FeNi trilayer structures [4, 5] with a ferromagnetic layer thickness of tFeNi = 10 nm, no change of anisotropy signs in the film plane are observed.
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