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Spin wave excitations in exchange-coupled [Co/Pd]-NiFe films with tunable tilting of the magnetization
KTH, School of Information and Communication Technology (ICT), Material Physics (Closed 20120101), Materials- and Nano Physics, Material Physics, MF.
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2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 87, no 14, 144426- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2013. Vol. 87, no 14, 144426- p.
Keyword [en]
Field, Multilayer, Torque, Scattering, Surface
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-123429DOI: 10.1103/PhysRevB.87.144426ISI: 000318511000005ScopusID: 2-s2.0-84876968405OAI: diva2:626854
Swedish Foundation for Strategic Research Swedish Research CouncilKnut and Alice Wallenberg Foundation

QC 20130610

Available from: 2013-06-10 Created: 2013-06-10 Last updated: 2013-06-10Bibliographically approved

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Nguyen Thi Ngooc, AnhÅkerman, Johan
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