Journal
PHYSICAL REVIEW B
Volume 80, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.224424
Keywords
antiferromagnetic materials; ferrimagnetic materials; ferromagnetic materials; gadolinium alloys; interface magnetism; iron alloys; magnetic structure; magnetisation; micromagnetics; terbium alloys
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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 (similar to 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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