Asymmetric kinetics of magnetization reversal of thin exchange-coupled ferromagnetic films |
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Authors: | L S Uspenskaya |
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Institution: | 1.Institute of Solid State Physics,Russian Academy of Sciences,Chernogolovka, Moscow oblast,Russia |
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Abstract: | This paper reports on the results of the investigation of the kinetics of magnetization reversal in FeNi-FeMn ferromagnet-antiferromagnet
thin hybrid films grown by magnetron sputtering on silicon substrates in the presence of in-plane magnetic field, which provided
unidirectional in-plane magnetic anisotropy in the ferromagnetic layer and a single-domain structure of the ferromagnet in
the absence of an external magnetic field. The constructed hysteresis loops and magnetization loci have made it possible to
reveal the specific features of the magnetization reversal process of an exchange-coupled ferromagnet, to establish new types
of asymmetry, and to obtain new proofs for the existence of a spin spring at the ferromagnet-antiferromagnet interface. The
visualization of the magnetization reversal process has allowed one to establish a one-to-one correspondence between the macrocharacteristics
of the material and the real processes occurring in ferromagnet-antiferromagnet hybrid structures. |
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