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[Co/Pd]-NiFe exchange springs with tunable magnetization tilt angle
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.
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2011 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 98, no 17, 172502- p.Article in journal (Refereed) Published
Abstract [en]

We investigate exchange coupled [Co/Pd](5)-NiFe thin films. Due to competition between the in-plane shape anisotropy of the NiFe and strong perpendicular magnetic anisotropy of the [Co/Pd](5) multilayer, unique magnetic configurations are achievable. In particular, we explore the out-of-plane magnetization tilt angle of the NiFe layer. Experimental results, based on conventional magnetometry, ferromagnetic resonance, and magnetic force microscopy, agree well with one-dimensional micromagnetic simulations. We find that the tilt angle is highly tunable [0 degrees-60 degrees] over a small range of NiFe thicknesses (4.8-8nm). Potential applications for high power, zero-field operation spin torque oscillators are discussed.

Place, publisher, year, edition, pages
2011. Vol. 98, no 17, 172502- p.
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URN: urn:nbn:se:kth:diva-34246DOI: 10.1063/1.3580612ISI: 000290046100035Scopus ID: 2-s2.0-79955690573OAI: oai:DiVA.org:kth-34246DiVA: diva2:422567
Funder
Knut and Alice Wallenberg FoundationSwedish Research Council
Note
QC 20110613Available from: 2011-06-13 Created: 2011-05-30 Last updated: 2017-12-11Bibliographically approved

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