Brillouin light scattering was applied to measure the evolution of spin waves in exchange-coupled [Co/Pd]-NiFe films with out-of-plane/in-plane magnetic anisotropy. Tunable tilting of the magnetization has important effects on the spin wave frequency gap: a substantial increase is observed with decreasing the soft NiFe thickness, while seemingly insignificant tilting angles cause a strong reduction with respect to a film with only the hard [Co/Pd] component. The spin wave frequency is reproduced also in samples, with increased thickness of the upper Pd layer, where a sudden modification in the tilting at the hard/soft interface is caused by the weakening of interlayer exchange.
Spin wave excitations in exchange-coupled [Co/Pd]-NiFe films with tunable tilting of the magnetizatio / S. Tacchi; T.N. AnhNguyen; G. Carlotti; G. Gubbiotti; M. Madami; R.K. Dumas; J.W. Lau; J. Akerman; A. Rettori; M.G. Pini. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 87:(2013), pp. 144426-1-144426-5. [10.1103/PhysRevB.87.144426]
Spin wave excitations in exchange-coupled [Co/Pd]-NiFe films with tunable tilting of the magnetizatio
RETTORI, ANGELO;
2013
Abstract
Brillouin light scattering was applied to measure the evolution of spin waves in exchange-coupled [Co/Pd]-NiFe films with out-of-plane/in-plane magnetic anisotropy. Tunable tilting of the magnetization has important effects on the spin wave frequency gap: a substantial increase is observed with decreasing the soft NiFe thickness, while seemingly insignificant tilting angles cause a strong reduction with respect to a film with only the hard [Co/Pd] component. The spin wave frequency is reproduced also in samples, with increased thickness of the upper Pd layer, where a sudden modification in the tilting at the hard/soft interface is caused by the weakening of interlayer exchange.File | Dimensione | Formato | |
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PhysRevB.87.144426FeNI:CoPd.pdf
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