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Magnetoelastic resonance as a probe for exchange springs at antiferromagnet-ferromagnet interfaces
- Seemann, KM;
- Gomonay, O;
- Mokrousov, Y;
- Hörner, A;
- Valencia, S;
- Klamser, P;
- Kronast, F;
- Erb, A;
- Hindmarch, AT;
- Wixforth, A;
- Marrows, CH;
- Fischer, P
Published Web Location
https://doi.org/10.1103/physrevb.105.144432Abstract
In prototype ferromagnet-antiferromagnet interfaces we demonstrate that surface acoustic waves can be used to identify complex magnetic phases arising upon evolution of exchange springs in an applied field. Applying sub-GHz surface acoustic waves to study the domain structure of the ferromagnetic layer in exchange-biased bilayers of Ir20Mn80-Co60Fe20B20, we are able to associate the magnetoelastic resonance with the presence of the exchange spin-spirals in both the ferromagnetic and antiferromagnetic layer. Our findings offer a complementary, integrative insight into emergent magnetic materials for applications of noncollinear spin textures in view of low-energy-consumption spintronic devices.
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