Angle dependence of the interface magnetic configuration in a model antiferromagnetically coupled ferrimagnetic/ferrimagnetic bilayer GdFe/TbFe

Abstract : The evolution of the magnetic configuration inside an antiferromagnetically coupled GdFe/TbFe bilayer is studied at room temperature. For such system exchange-bias behaviors have been previously reported and are found to depend on the magnetic configuration above the blocking temperature 250 K. Here, the in-plane components of the magnetization are studied for different applied-field orientations. By comparing those results with a one-dimensional micromagnetic model the evolution of the interface magnetic configuration is well described. For the different applied-field orientations the magnetic behavior is found to be dominated by the formation of a magnetic twist at the interface which may adopt one chirality or the other.
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Physical Review B : Condensed matter and materials physics, American Physical Society, 2009, 80 (22), pp.224424. 〈10.1103/PhysRevB.80.224424〉
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Stéphane Mangin, Luc Thomas, Francois Montaigne, Weiwei Lin, Thomas Hauet, et al.. Angle dependence of the interface magnetic configuration in a model antiferromagnetically coupled ferrimagnetic/ferrimagnetic bilayer GdFe/TbFe. Physical Review B : Condensed matter and materials physics, American Physical Society, 2009, 80 (22), pp.224424. 〈10.1103/PhysRevB.80.224424〉. 〈hal-01380624〉

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