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Abstract: Antiferromagnetically coupled multilayers with perpendicular anisotropy, asCoPt-Ru, Co-Ir, Fe-Au, display ferromagnetic stripe phases as the groundstates. It is theoretically shown that the antiferromagnetic interlayerexchange causes a relative shift of domains in adjacent layers. This ``exchangeshift- is responsible for several recently observed effects: an anomalousbroadening of domain walls, the formation of so-called ``tiger-tail- patterns,and a ``mixed state- of antiferromagnetic and ferromagnetic domains inCoPt-Ru multilayers. The derived analitical relations between the values ofthe shift and the strength of antiferromagnetic coupling provide an effectivemethod for a quantitative determination of the interlayer exchangeinteractions.



Autor: N. S. Kiselev, I. E. Dragunov, U.K. Roessler, A.N. Bogdanov

Fuente: https://arxiv.org/







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